I have a problem!! Sometimes my simple mind can just not wrap itself around some, what seem to me, conundrums. Some things just don't fit neatly into a slot in my brain. Then, I just can't stop thinking about it and it keeps bothering me because I just can't explain it in logical terms.
OK, I guess I may have you a little confused about what I am thinking. Maybe that is because I am a little confused. Here is my problem.
Einstein said that nothing can travel faster than light. The speed of light is the speed limit of the universe. The distance of things that are really far away are expressed in "light years". A light year is the distance that light travels in a year and should always be a finite number. Nothing travels faster than light. (If something did travel faster than light we probably couldn't detect it anyway.)
Now, here is my problem. Since a lot of us have RVs, let me use one as an example. Let's say you were sitting beside the road one night and you see a motor-home coming down the road. You can see inside that motor and there is a kid in it shining a flashlight towards the front of the motor-home. Now, if this kid were throwing a ball in the same direction, the speed of the ball would be the sum of the speed of the RV and the speed that the ball was thrown. That seems logical to me, right? Then if that is correct, the same thing should work if he were shining the flashlight towards the front. The speed of the beam of light leaving the flashlight should be added to the speed of the RV, just like the ball. Do you all agree with that?
Well, we would both be wrong. If we could measure the speed of the flashlight beam from inside the RV and from outside the moving RV, it would measure the same!! Now that blows my mind, but Einsteins universal speed limit has prevailed. Now, please, someone explain this to me before my head explodes. Then both of us will have a great day, you hear?