Respondent was in the employ of appellant at its lumber-yard in the city of San Francisco. He was standing upon a high platform engaged in removing lumber from a rack, and while so engaged he fell therefrom and received serious injury. He recovered a judgment of five thousand dollars for such injuries, and this appeal is prosecuted from that judgment, and from an order denying a motion for a new trial.

Appellant’s demurrer to the complaint was overruled, and such ruling of the court is now insisted upon as error. That portion of the complaint attacked by demurrer is as follows-: “ That said platform near said rack was carelessly and negligently constructed and built by defendants, who built and constructed said platform out of light lumber and scantling, the flooring *536 of said platform not being nailed or fastened, and with* out a railing around said platform, instead of building said platform by nailing the flooring thereof, and placing a railing around said platform; and by reason of not nailing down the flooring of said platform the boards shifted, and plaintiff in endeavoring to hold himself caught hold of a piece of said gutter lumber piled on the said rack, which piece of gutter lumber broke, and plaintiff fell to the ground.” It is claimed by demurrer that the foregoing allegations of the complaint are uncertain in this, “ that it does not appear whether the alleged injury resulted from the weight and character of the lumber used in the construction of a certain platform therein mentioned, or whether it resulted from the absence of nails in the flooring of said platform, or whether it resulted from the absence of a railing around the same, or whether it resulted from the breaking of a certain piece of gutter lumber piled near said platform.”

This paragraph of the complaint does not comprise a perfect form of pleading. It does not contain that clear and concise statement of the facts constituting the cause of action contemplated by the code. At the same time, upon a close inspection of it, we do not think the uncertainty of which appellant complains really exists. Useless and surplus matters are stated therein, yet it is fairly apparent therefrom that the fall of respondent was occasioned by the shifting of the boards of the platform, and that the cause of the shifting of the boards lay in the fact that they were not nailed.

Aside from these reasons, if we concede the complaint defective in this regard by reason of uncertainty, yet that uncertainty is not such as demands a retrial of a case which has gone to judgment upon the facts. It is not in all cases where error has been committed by trial courts in overruling demurrers to complaints upon the grounds of ambiguity or uncertainty, that this court will order a reversal of a judgment based upon a trial of the issues made by the complaint and answer. The same rule applies to errors of this character as is in- *537 yoked as to all other errors of the court. It must not be mere abstract error, but it must be prejudicial and injurious error in order to avail appellant, for otherwise he has no cause of complaint. It is apparent to the court from this record that no harm resulted to appellant by reason of the order of the court overruling the demurrer. The denials of the answer are full and complete as to the manner in which the platform was constructed, and especially upon the issue as to whether or not the boards were fastened by nails, and as to whether or not they shifted by reason of the fact that they were not so fastened. The case was tried upon these issues, and the form of the complaint in this regard could not have misled and injured appellant. As was said in Gassen v. Bower, 72 Cal. 555 : “Where a pleading is demurred to for ambiguity, we think that if the party was not misled to his prejudice the ambiguity cannot be said to affect the substantial rights of the parties.” (See, also, Reynolds v. Lincoln, 71 Cal. 183 .) In Stark v. Wellman, 96 Cal. 400 , Mallory v. Thomas, 98 Cal. 644 , and Thelin v. Stewart, 100 Cal. 372 , the complaints reviewed by this court presented facts' entirely different from those here stated by the pleader. The remaining questions raised by the demurrer have no force.

It is claimed that the evidence is insufficient to support the verdict. The platform upon which respondent was standing at the time of his fall consisted of two boards about ten inches wide and two inches thick, and about twelve feet long, stretched upon scantlings or wooden supports. Of these two boards the one nearer the rack may be called the inside board, and the one farther from the rack the outside board. Between the outside and inside board there was a space of one or two inches, and between the inside board and the rack there was a space of between four and six inches. The inside board was without nails, fastenings, or other attachments to keep it in place. Between this inside board and the rack there was this margin of from four to six inches for shifting, and upon the other side of *538 this board, and between it and the outside board, a margin of one or two inches. While in the act of pulling a refractory piece of moulding from the rack the inside board upon which respondent .was standing shifted or moved toward the rack, and in consequence thereof he was precipitated to the ground below. This scaffolding and platform had been erected by defendant some years prior to the accident, and was in the same condition upon that day as when first erected. Respondent had been upon the platform but a few times prior to the accident, and knew of no defect or infirmity existing therein. As to some of the foregoing facts there may be a slight conflict in the evidence, but prima facie they are all shown. It is now claimed that the evidence fails to support the verdict in this, that conceding the platform to be defective in that the boards constituting the same were not nailed, still such defect was either known to respondent or should have been known by him, as he had equal means with his employer of possessing such knowledge; and for these reasons it is claimed that he assumed the danger and the risk. Conceding the principle of law contained in the statement of this position to be sound, still these things were matters of defense to respondent’s right of recovery. (Magee v. North Pac. Coast R. R. Co., 78 Cal. 437 ; 12 Am. St. Rep. 69 .) The burden was upon appellant to show one or both of these conditions, and the evidence is not at all conclusive that he showed either. It is not shown that respondent was aware that these boards were not fastened; neither is it at all clear that he had equal means with his master of becoming acquainted with such fact. His master erected this scaffold and laid these hoards, and by doing so must be held to have known that they were not nailed. Respondent had not been notified of this condition; he had seen the platform but a few times; the defect could hardly be said to he a patent defect; and by no principle of law was the servant required to make a minute inspection of this appliance as to its being entirely safe and free from *539 defects before be was justified in assuming the risk of working upon it. It was the duty of the master to pro- ■ vide a scaffold and platform suitable to the purposes for which it was intended, and in so providing he was required to exercise reasonable care. And what constitutes reasonable or ordinary care must be determined in the light of the special facts and circumstances surrounding each particular case. Again, the master is required to use the same care in the inspection and supervision of the appliance, for the purpose of discerning defects that may subsequently occur therein, as is required of him originally in furnishing the appliance or instrument. To defeat the servant’s right of recovery he must not only be aware of the defect in the appliance, but know and appreciate the risks and dangers resulting or likely to follow from such defects; although he is in no better position if he is ignorant of the defects and the risks and dangers by reason of his failure to exercise ordinary common sense and prudence in the examination of the instruments and appliances placed in his hands with which to labor. These questions are involved in the present case, and the true solution of them is entirely and solely dependent upon the evidence introduced at the trial. In almost every case they are issues of fact to be found upon by the jury, and not matters of law to be declared by the court. Upon an examination of the evidence contained within the lids of this record we have no hesitation in saying that the present case as to its facts was one pre-eminently for the jury and not for the court.

The president of the corporation appellant when upon the witness-stand was asked the following question by his counsel: “ Did you notice at any time any defect in this platform?” Objection was sustained thereto upon the ground that it called for the conclusion of the witness, and the ruling, of the court in this regard is insisted upon as prejudicial error, but for many reasons we think it furnishes no occasion for a reversal of the judgment. Conceding the ruling erroneous, the wit *540 ness in effect subsequently testified to all the matters involved in the question. The respondent presented his case to the jury upon the theory that the boards of the platform were not fastened, and that while standing upon the inside board it shifted by reason of not being so fastened, and the fall and injury followed. This witness testified: “ My attention had never been directed to any defect by anybody in this platform.I can’t say whether the inside board of the top platform was nailed or loose at the time.” Again, we are not prepared to say that the question was unobjectionable. It was very general, and if it had been answered in the negative we are unable to see how the answer would have enlightened the jury or aided appellant’s cause. Defects in the construction of this platform, in the minds of the jury, may not have been defects in the mind of the witness. The failure to fasten the platform may have been a serious defect in its construction, viewed from the juror’s standpoint, and no defect whatever viewed from the standpoint of the witness. Hence, this answer, whatever it may have been, would point to no definite and certain conditions. The witness had the opportunity to testify as to the manner of the platform’s construction in all its details, and there can he no question but that such would have been the better practice to have followed. The case was not one demanding the introduction of expert testimony, for the jurors, after they had been fully advised.as to the manner of its construction, were just as competent to determine whether or not it was defectively constructed as was any expert that might be produced upon the witness-stand.

Again, looking at the matter from appellant’s point of view, if we concede that the answer to the question called for a statement of fact, it certainly was near the border line of objectionableness, and the trial court, in the exercise of its discretion and the conduct of the examination of witnesses, had the legal right to sustain an objection thereto. The principle discussed in Kreuzberger v. Wingfield, 96 Cal. 251 , is directly in point here; *541 and, while the evidence was admitted in that case, it was held in effect that no material error would have been committed if it had been rejected, the court saying: “ So in this case the trial judge might properly have required the plaintiff to ask questions touching all the details of the work of constructing the walk, its dimensions, and the grade upon which it was laid, and the quality of the materials used in its construction; but it was clearly a matter within the discretion of the trial judge to permit the general question, and the defendant could, if he had so desired, have called for more minute particulars upon the cross-examination of the witness.” The court, in that case, also quote approvingly from Brink v. Hanover Fire Ins. Co., 80 N. Y. 108 , wherein it said: “While it would not have been a legal error to have sustained the objection, I am of the opinion, under the circumstances of this case, that it was not a legal error to overrule it. The object of all examinations in judicial tribunals is to elicit truth, and there are many cases where the form of questions and the manner of examination must be left to the discretion of the trial judge.”

There are no other questions raised by the record of sufficient importance to demand extended notice.

For the foregoing reasons it is ordered that the judgment and order be affirmed.

Hearing in Bank denied.