The impossibility of framing any general abstract statement which will suffice to resolve the difficulties which may be presented under varying conditions, or to anticipate all such conditions, is apparent. We shall undertake no such task. There are, however, certain sets of conditions, of not infrequent occurrence, concerning which general conclusions may be made safely and profitably.
There is, for instance, the occasional case where, after the plaintiff’s peril, to which he has carelessly exposed himself or his property, becomes known to the defendant, the latter introduces into the situation a new and independent act of negligence without which there would have been no injury. Such was the case of Smith v. Connecticut Ry. & Ltg. Co., 80 Conn. 268, 270, 67 Atl. 888, and it was there held, in accordance with sound reason, that this new negligence was to be regarded as the sole proximate cause of the accident which ensued. The rule for that type of case is thus furnished.
Cases of another class occasionally arise, where it is disclosed that the plaintiff has by his lack of care placed himself in a position of danger from which he either cannot, or cannot reasonably, escape after the discovery of his danger. Here, again, there can be no hesitation in saying, that if the defendant, after his discovery that the plaintiff is in the situation described, fails to use reasonable care—and that is care proportioned to the danger—to save him from harm, and harm results from such failure, the defendant’s want of care will be regarded as the sole proximate cause, and the plaintiff’s a remote cause only.
The situation just stated is not infrequently changed, in that means of escape were open to the plaintiff by the exercise of reasonable care, but it was apparent to the defendant, in season to have avoided the doing of harm by the exercise of due care, that the plaintiff would not avail himself of them. Here it is assumed that the situation of exposure had been created and established by the plaintiff’s action before the period of time began within which the defendant, acting reasonably, might have saved him, and that within that period the plaintiff did nothing to create or materially change that situation by active conduct which was not marked by reasonable care. Under the assumption he remains passive, in so far at least as negligent action is concerned, and can be regarded as careless only in this that he did not awake to his surroundings and do what he reasonably could to avoid the threatened consequences of a situation which he had already negligently brought about. In such cases the humane, and, to our mind, the better reason, all things considered, leads to the conclusion to which our former opinions, already cited, commit us, and which a large number of cases elsewhere approve, that the want of care on the part of the plaintiff will be regarded as a remote and not a proximate cause.
Another important variation is oftentimes introduced into the situation, in that the plaintiff continued as an active agent in producing the conditions under which his injury was received down to the time of its occurrence, or at least until it was too late for the defendant, with knowledge of his peril, to have saved him by the exercise of reasonable care under the circumstances. This variation imports into the situation an important factor. The plaintiff, during the period named, is not merely passively permitting an already fixed condition to remain unchanged. He is an actor upon the scene. He is, by acts of his volition, bringing into the situation which confronts the defendant changed conditions and, in the fullest sense, co-operating with the latter in bringing about the ultimate result. In such case his conduct must be regarded as a concurring efficient cause. It is, in the fullest sense, a proximate and not a remote one, making his negligence contributory.
It is said, however, that there are cases, and undoubtedly there are, where it is reasonably apparent to the one who inflicts the injury that the injured one is careless of his safety, and that, in continuance of his carelessness, he is about to place himself in a position of danger, which he subsequently does, and where the former thereafter, having a reasonable opportunity to save him from harm, fails to do so; and it is contended that in such cases the conduct of the injured person should be regarded as a remote cause only of the resulting harm. We are unable to discover any logical reason for such a conclusion, or any place at which a practical or certain line of division can be drawn between that careless conduct of a man, playing some part in an injury to him, which the law will regard as having that causal connection with the injury which makes it a proximate cause, and that careless conduct which will not be so regarded, if the contention under consideration is to be approved. The conduct of the man who inflicts the injury under such general conditions may indeed be such that it is open to the charge of wilfulness or wantonness. If so, the case is not one of negligence, and the defense of contributory negligence would not be available. Rowen v. New York, N. Y. & H. R. Co., 59 Conn. 364, 371, 21 Atl. 1073. If the conduct is not wilful or wanton, it is negligent only. Thus treated, it forms one factor of negligence in the situation. The plaintiff’s want of care is another factor, and it certainly has something substantial to do in bringing about the result reached. Upon what theory or foundation in reason it can be said that, under the circumstances assumed, it is not an efficient cause of that result co-operating concurrently with the other cause to be found in the other party’s negligence, we are unable to discover. The causal connection is plain to be seen, and the act of causation is that of a positive act of volition. The two actors upon the scene owe precisely the same duty to be reasonably careful. Dexter v. McCready, 54 Conn. 171, 174, 5 Atl. 855. Neither occupies in that regard a superior position, and the one who suffers can claim no precedence over his fellow actor or at the hands of the law. To say that no matter if one be negligent in going forward into danger, or in creating new conditions or complicating them, the law will protect him and cast upon the other party the responsibility for the result, is to ignore the fundamental principle of contributory negligence and bring the law upon that subject into hopeless confusion, and merit for it the condemnation which Thompson has so forcibly expressed. 1 Thompson on Negligence, §§ 230, 233. The well-considered cases which have directly dealt with this subject agree with us, we think, in our view that active continuing negligence of the kind assumed is to be regarded as contributory in the legal sense. Butler v. Rockland, T. & C. Street Ry. Co., 99 Me. 149, 160, 58 Atl. 775; Murphy v. Deane, 101 Mass. 455, 465; Dyerson v. Union Pacific R. Co., 74 Kan. 528, 87 Pac. 680; Little v. Superior Rapid Transit Ry. Co., 88 Wis. 402, 409, 60 N. W. 705; Green v. Los Angeles Terminal Ry. Co., 143 Cal. 31, 47, 76 Pac. 719; Olson v. Northern Pacific Ry. Co., 84 Minn. 258, 87 N. W. 843.
We have thus far dealt with cases in which actual knowledge on the part of the defendant of the plaintiff’s peril enters into the assumption of facts. Suppose, however, that such knowledge is not established, but facts are shown from which it is claimed that the defendant ought in the exercise of due care to have known of it. What shall be said of such a situation?
In so far as imputed or constructive knowledge may be embraced in the assumption, the simple answer is to be found in the legal principle that full and adequate means of knowledge, present to a person when he acts, are, under ordinary circumstances, treated as the equivalent of knowledge. Post v. Clark, 35 Conn. 339, 342.
But our assumption reaches outside of the domain of knowledge, either actual or constructive. It suggests, in the use of the phrase “ought in the exercise of due care to have known,” frequently met with in the books, the existence of a duty to exercise due care to acquire knowledge, and the query is, whether the law recognizes the existence of such a duty to the extent of making it a foundation for responsibility for conduct akin to that which flows from conduct with actual or constructive knowledge.
We have frequently held that the character of one’s conduct in respect to care is to be determined in view of what he should have known as well as of what he did in fact know. Snow v. Coe Brass Mfg. Co., 80 Conn. 63, 66 Atl. 881. In these cases the question has been as to one’s duty for his own self-protection. That duty, according to established principles, involves the making of reasonable use of one’s senses under the penalty of forfeiture of all claim for redress in the event that harm results. Popke v. New York, N. H. & H. R. Co., 81 Conn. 724, 71 Atl. 1098.