TT, or other 奥数得奖者， check my explanation is right or not

If we live in simulation, and if there is a smallest grid space (within our human technology level), we can test Gamma ray shooting intop different angels.

 

The gamma ray that happened to shoot in the exact x, y, z axis will be different from the gamma ray that shoot at an angel (say, 45 degree from axis), because the gamma ray shooting at an angel will only be an approximation, it have to go a smallest grid on x axis first, and then go 90 degree on another smallest grid; and the distance and time will be spent longer.