But I don't! };^)
Seriously, I'm talking distance and time, not speed.
Object "A" travels left from point "C" at the speed of light for one second. Object "B" travels right from "C" at the speed of light for one second. At the end of that second, light from "A" to "B" would take two seconds, light from either "A" or "B" to "C" would only take one second. Not sure I'm getting across here, but it doesn't matter much anyway since the Vogon construction fleet is building the bypass this afternoon.
All this confusing talk about the speed of light . . but what about the speed of dark?
Your imaginary demonstration starts to reveal the problem, IMHO. Allow me to elaborate. Let us say that for any point we have whatever number of original observers and they all set off in different directions in pairs. At some given time interval one member of each pair stops and the other continues moving. Shortly thereafter all members observe the speed of light coming from the original point. According to Einstein everybody will get the same result. “There is no preferred frame of reference.”