But for the “thing” traveling at the speed of light (which is what I’m talking about) what I said is true (according to Relativity) . Do you agree?
I wish I were smart enough to answer your question.
You cannot possibly travel at the speed of light. As you approached the speed of light, you would become increasingly more massive, and it would take ever more force to accelerate you even a little bit. From your prospective, as you zipped along at 99.9999% of the speed of light, everything in your spaceship would seem fine. Rulers, tables, computers would seem the same as they did at 0.00001% of the speed of light. Clocks would work just fine. But “stationary” objects, would seem to shrink in the direction parallel to your line of travel, the earth would appear to be flat as a pancake, clocks on earth would appear to be agonizingly slow.