I need to explain to a person that the word "we" doesn't necessarily mean "all of us" in some contexts.
For example, a speaker giving a speech may say,
"What we learned from the Great Depression was that....
Obviously, not every one to whom the speech is being delivered might have learned the same lessons from the Great Depression. Indeed there might be some who haven't even heard of the Great Depression. So the speaker, using the word "we", doesn't really mean "all of us".
How is this usage of "we" described? I know I can simply say "We doesn't necessarily mean 'all of us'", but I want to know if there is a better word or a phrase that can describe this usage of "we".