OK so my whining for help covers writing a paper about how things would be different if the speed of light was changed to 65 mph. Right after getting the assignment I started thinking about dilations and all that. Then, I remembered planck's constant. Light would still have to have the same amount of energy, so the frequency would have to go up. Then I looked up a little more about planck's theorems and read about planck units. so if c is changed in the planck units, everything is just scaled. space gets longer, time gets longer, charge decreases, etc etc pretty much there's just less energy if the speed of light decreases. but if everything is just scaled, wouldn't it seem the same? wouldn't it seem like light still goes 300000 km/s? the only way you would be able to tell any difference would be to compare two sections of the universe with different speeds of light, right? my main question is about whether or not changing c would actually change the speed of light through space if everything is relatively unchanged.