system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:why is it so hard to emulate older video game consoles on a PC when the PC's of today have much better and faster hardware?
gpt
Imagine it this way: your Xbox speaks French, your PS3/4 speaks German, and your computer speaks English.

All of the programs (games) written for Xbox and Playstation are written in French and German.  This way, they can get the optimal use out of those systems.

But your computer doesn't know French, so it can't play an Xbox game.... unless you wrote it a convenient French/English dictionary.  Still, it takes time and effort to go through this dictionary and find the right words, so your computer needs a lot more brainpower to translate and do the functions in the correct time.  And that dictionary had better be *really* clear, or the computer is going to mistranslate a word and mess everything up.

Not a perfect metaphor, but it works.