If I show a red coloured light to a self driving Uber will it stop ? Can these cars understand speed limits and sign boards like go slow ?
`` Given that time slows inversely to speed , does it follow that time should progress at a fixed '' `` lower '' '' rate at the speed of light and likewise that if an object is motionless in space , then time passes at a fixed '' `` faster '' '' rate , therefore Earth time can be measured as a ratio of these rates ? ''