system
Given the following post, respond as if you're commenting on Reddit:
human
How Is adderall related to meth?

I saw that the adderall has amphetamine salts but I’ve never taken a chemistry course so I’m wondering what exactly does that mean to it’s relation with meth. 

How are they the same? Are they different?
gpt
Chemical structure is highly similar but that ultimately means very little because changing even one part makes for a drastically different substance. 

It’s kinda like how humans share a ton of genes with bananas but we are nothing like bananas because the differences we have in our genes (I believe we are 41% similar to bananas if I’m remembering right)  amount to a whole LOT of differences in the practical world.