Computers don't understand concepts and people only do. Our gradual ascent from hardware to intuitively-usable mechanisms involves abstracting away the repeated "okay, given these primitives, here's how we'd use them" to go the next layer up.
But that's non necessarily a good way. It's the easy way out of "I don't like these details, so I'll try to hide them under something". A good abstraction is worth its weight in gold. A bad abstraction (the vast majority) is worth its weight in dung.
