Oh, I hope not. This would be science in reverse. A theory has to have a basis, in fact, it must have a very strong basis. A theory is a scientifically acceptable principle that is offered to explain a vast body of facts, and is supported by an overwhelming body of evidence. You can't have a theory before you have the evidence.
Science starts out with observations - facts.
Facts are not generally disputed. The author may have been referring to a hypothesis. Next you gather evidence to support that theory, publish the results, and let other scientists in the same area of study try their best to pick holes in your conclusions. Yes, you are going to need evidence. Ascientist does not ask what you can do to prove your 'theory' correct.