Like vending machine popcorn. Coders pop it in the microwave oven. They can tell what job is running just by listening to the rate of popping. Know every nuance of every instruction and use them all in every real program. Puppy architectures won't allow execute instructions to address another execute instruction as the target instruction.
Real programmers despise such petty restrictions.
Don't bring bag lunches to work. If the vending machine sells it, they eat it. If the vending machine doesn't sell it, they don't eat it. Vending machines don't sell quiche.