The doctrine in tort law which holds that one who maintains a dangerous instrumentality on his premises which is likely to attract children is under a duty to reasonably protect those children against the dangers of that attraction. 299 S.W. 2d 198, 199. Under this doctrine the fact that the child may be a trespasser is merely one fact to be taken into account, with others, in determining the defendant's duty, and the care required of him. The basis of this liability is generally held to be nothing more than the foreseeability of harm to the child, and the considerations of common humanity and social policy which, in other negligence cases, operate to bring about a balancing of the conflicting interests, and to curtail to some reasonable extent the defendant's privilege to act as he sees fit without taking care for the protection of others. Therefore, one has a duty to fence swimming pools, to remove doors from discarded refrigerators, to enclose partially constructed buildings, and to be sensitive to other potentially dangerous conditions which attract curious children. See Prosser & Keeton, Torts §59 (5th ed. 1984).