Science has done the same thing in many areas. And even Junior's post demonstrates that.
Good point. A classic example is "global warming".
`Amenable' scientists--those with predilictions wanting research grants, peer approval & recognition--issue predictions, deductions, and they do computer models, and so forth and so on and on and on.
But when all is said and done, all those terms are just euphemisms or `dressed-up' ways of saying, "This is my best guess."
Scientists don't like to admit that their methodology is often just that: guessing, and they can get a little `testy', so that often it isn't enough for them to say, "Here's my research and evidence."