system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Did our ancestors (Refering back to stone age) already have the same kinds of emotions we do or did emotions grow along with our general evolution?

For example, let's say a warrior lost his wife to some predator, did he mourn for her like we do nowadays, or was he simply not able to have that emotion yet?
gpt
They had emotions, or things that we could easily think of as emotions - many animals do, and primates certainly do.  It is almost impossible to understand to what degree emotions relate to _language_.  It is believed that stone age people had language, but it's not clear if it was sophisticated enough to convey the complexity of emotions we convey now.  However, it's not clear that we'd have this complexity without language either.  Is our language and intellect complex?  Or our emotions?