Now, you might think this a subjective term, but in the eyes of the law, this is when you fail to take care towards another person and don’t behave in such a way as a reasonable, or prudent person would do in the similar circumstances. Okay, as clear as mud then, but the law will interpret your actions as either fair, or unreasonable. This is case by case, but if you haven’t behaved reasonably, then you will be considered negligent. Here’s a line from the court case which started it all. It was in 1856 and involved the case of Blyth versus Birmingham Waterworks Co. It was ruled: ‘the omission to do something which a reasonable man guided by those considerations which ordinarily regulate the conduct of human affairs would do, or doing something which a prudent and reasonable man would not do’. Well said.