i tried to address the analogy which is implied by these two points. and it is true, that for coffeescript on javascript, coffeescript is not more constant and js is not more variable. but that's not the point of the argument javascript were the assembly of the web. the point is, that all these languages compile down to js. as c and c++ compile down to assembly.
and honestly the "c is constant" is not right some of the time either. consider small/big endianness, different libcs. heck, even the syntax changed (k&r surely looks and feels different).
my comment on simd instructions to assembly was an analogy to asm.js and javascript.
What do you mean "some truth" .. different CPU architectures have different assembly language .. what's to get?
Oh, and SIMD instructions are an extension to the x86 instruction set .. not an abstraction.
What is your background on low level development, may I ask?