You should probably clarify that 1 satoshi = 0.00000001 bitcoins, the current smallest unit. Now people say "we can move the decimal point", but I believe they

You should probably clarify that 1 satoshi = 0.00000001 bitcoins, the current smallest unit. Now people say "we can move the decimal point", but I believe they are stored as 64 bit integers. Which means the smallest unit is not infinitely divisible without moving to say 128 bit integers (which is not much _more_ of a hurdle, but still slightly higher effort than implied by adding more precision).