Is someone thinking so? Really? THIS is how computer works: https://software.intel.com/en-us/articles/intel-sdm

I remember we started our University course of low-level programming from writing in machine codes. No jokes, took binary representation of assembly instructions from that manual and wrote in HEX editor. Then we disassembled simple C applications, understanding unfolding our high-level instructions into x86 assembly. Passing parameters through registres, through stack, two models of stack restoration (yeah, cdecl and stdcall, that moment I realized what does it mean), and other stuff you won't be ever bothered to think about writing in C/C++. And only after that started writing in actual Assembly. THIS is knowledge how computer works. If you know only C, you know nothing.