system
A chat on subreddit /r/me_irl
human
Exactly, this is the way. You want it spicier you most likely have the methods to do so on your table already. In the US we have salt and pepper on the table. In Thailand you have stuff like chili flakes, chili paste, sugar, etc. to adjust the taste/heat.
gpt
I've never seen a place that serves Pad Thai only have salt and pepper available on the table. The last place I went had chili flakes, hot chili oil, sriracha, soy and like 3 other bottles that I didn't recognize on each table.