Defenestrating Thoughts from the Bivouac

Here’s a random thought: you know how sonic booms are caused by pressure waves that are forced together, can’t “get out of the way” of each other, and end up merging into a single large shock wave?

Well, what if black holes are formed when something exceeds the speed of light? I know it’s not a very sophisticated theory (and most likely not original), but there does seem to be some small parallel between sound waves that can’t “get out of each other’s way” and “light can’t escape it”.

If so, this would explain why we haven’t been visited by any intelligent species from outer space; they just keep destroying themselves with blackholes. :-P