I could have sworn I heard something once about how fast food chains put addictive chemicals in their food. For me, I don't have an addictive personality. There's nothing in my life I feel addicted to other than fast food. It's weird. I know the food is dogshit and I can make tastier stuff at home. But I also think about getting fast food all the time and have to stop myself from ordering it a lot. It does kind feel like a dopamine hit when I open up a bag of fast food and start digging in.
That's a huge part of the R&D - it needs to be created so that the final preparation will get done by someone who doesn't give a shit.
Can confirm. Worked at jack in the box and nobody gave a shit about making tacos but they still ended up delicious and addictive