It is often understood from its strict menaning in criminal law of England and Wales, the core concepts of mens rea are intention, recklessness, and knowledge, it doesn't include negligence, objective recklessness and strict liability in its extension.
英国刑法通常从狭义理解犯意,其核心术语是故意(intention)、轻率(recklessness)、知道(knowledge),从外延上看不包括过失(negligence)、客观轻率、严格责任。
There are different ideas of "whether I know I am not a brain-in-a-vat"in the contemporary western epistemology.
对"我是否知道我不是缸中之脑"这个问题,当代西方知识论者有不同的看法。