> Practically speaking, we have a word for the kind of "abstractionless" model you're describing: machine code. I mean, even assembler is a bunch of abstraction

> Practically speaking, we have a word for the kind of "abstractionless" model you're describing: machine code. I mean, even assembler is a bunch of abstractions about 'registers' and 'instructions' that are really just specific portions of the hardware or opcodes! I understand what you are getting to here, and agree that we are getting into the domain of semantics. Yet it could be argued that (for the most part) there is a 1:1 mapping between assembly and the assembly processes is (mostly) reversible. Personally, this is where I would draw the line. > So we either descend endlessly into pedantry arguing that cosmic rays and ... I think I see where you're going, though I don't agree with the particular example. If you're saying that machine language is an abstraction in itself, that those sequences of 1's and 0's are a construct of electrical engineers to describe electrical pulses that control transistors in a chip, then I fully agree with you. And if you say that those electrical pulses and transistors are themselves abstractions of physical processes, then I fully agree with you. But I wouldn't really describe it as nerd sniping. These involve different disciplines that are examining the machine at fundamentally different levels.