I'll take a stab and say that at 3-4 years old I had a pretty decent idea that other people had a mind of their own. It wasn't so easily learned but oddly enoug

I'll take a stab and say that at 3-4 years old I had a pretty decent idea that other people had a mind of their own. It wasn't so easily learned but oddly enough I picked it up around 3 that I knew my mind was wholly separated from my sister, mom, dad, and grand parents. I can't explain how I got the concept down I just did. A better way to explain it is that it's also when my memories become far more concrete was around 3 years old (about the time I got into Transformers and He-man. An odd way to place it but it was definitely when things got more like what they are now, before then it was a mushy blur of noise and color tbh.).