MJPollard said:Especially since one rock hitting another rock wouldn't cause a flash like that...
So I guess you've never heard of the mineral flint and the countless other minerals that make sparks when they are stuck against one another.....
MJPollard said:Especially since one rock hitting another rock wouldn't cause a flash like that...
So I guess you've never heard of the mineral flint and the countless other minerals that make sparks when they are stuck against one another.....