The honorable task of sandwich-making is also a sequence.

Let's try to make a peanut butter jelly sandwich.

Get 2 slices of breadPut peanut butter on slice 1 and jelly on slice 2Press slices 1 and 2 together

Fantastic! If we forgot a step or changed the order, would we still get a great PBJ?

Tastes differ, but would that really make a great PBJ?