>CISC (heavily encoded) instruction sets made sense when memory was very expensive That's assuming that CISC programs are smaller than RISC ones, which is not

>CISC (heavily encoded) instruction sets made sense when memory was very expensive That's assuming that CISC programs are smaller than RISC ones, which is not the case, at least for RISC ISAs with two instruction lengths (CDC6600, Cray 1, first IBM 801 version, RISC-II, and ARMv7 and RISC-V obviously)