Reminds me how Einstein derived special relativity. He was thinking about synchronizing clocks at railroad stations across the continent. The idea of simultanei

Reminds me how Einstein derived special relativity. He was thinking about synchronizing clocks at railroad stations across the continent. The idea of simultaneity depends on the location of the observer. The traveltime of light crossing the globe in 1/14 a second matters little at train speeds. But thats an eternity for HFT and noticeable in a google search. These issue crop up on integrated circuits where clock cycles are shrinking and die sizes are increasing. Defining simultaneity where the microinstruction cycle time is much shorter than the chip or board propagation time is tricky. Each design has their methods to deal with this.