Science- just other people's opinions?

And we have only decided what these scientific laws are through trying to make sense of our own observations. Newton saw the apple drop, and observed that there must be such a thing as gravity. This is a universal law which, coincidentally, means that people cannot float. (Strangely enough gravity does not seem to work at very big and small levels, such as atomic and galaxy scale.) But three weeks ago I observed myself floating against the ceiling of a bus. Other people have out of body experiences which they have observed. Can we make a universal scientific law out of that? If anyone’s got any answers, let me know.