I wouldn't expect someone to remember the definitions of things that they do not use routinely. I suspect that given a definition, you would remember the concep

I wouldn't expect someone to remember the definitions of things that they do not use routinely. I suspect that given a definition, you would remember the concepts. This is important and the primary reason we teach breadth of knowledge. The kids would have recently learned this material and the definition would be relatively easy for them to remember. If we rely on the average state of mind of a population to guide education, we will quickly end up teaching nothing. We should instead strive to teach as much as possible with the understanding that some information will be forgotten. We don't want our children to be as good as us. We want them to be better than us.