And for Intel these bugs go back to the first Pentium Pro in 1995, their first out-of-order speculative execution design. Very cunning of them, along with IBM two years earlier, the SPARC bunch starting that year, MIPS and AMD a year later, and recently ARM as it targeted higher performance to follow the same exactly "strategy".

Or maybe it was an industry blind spot, now a very big deal because so many of these CPUs run other people's random code, JavaScript in browsers, and anything and everything in shared cloud hosts.