If people forget lessons from the past and redo the same mistakes over and over this is the opposite of technology moving forward. It hampers progress. This is why it's called "reinventing the wheel".
Yet, if you want an extreme example here's RISC-V *currently* adding support for vector instructions.
Introduced on DEC Vax in 1970 and forgotten for a good while.
> vector instructions ... forgotten for a good while.
Not quite "forgotten" all of that time, though. Didn't x86 add them around the turn of the century? And probably other CISC architectures too, now and then over the decades. It's not like they went away totally, and only popped up again right now.
If people forget lessons from the past and redo the same mistakes over and over this is the opposite of technology moving forward. It hampers progress. This is why it's called "reinventing the wheel".
Yet, if you want an extreme example here's RISC-V *currently* adding support for vector instructions.
Introduced on DEC Vax in 1970 and forgotten for a good while.
https://riscv.org/wp-content/uploads/2015/06/riscv-vector-wo...