Rhett Allain, a physicist at Southeastern Louisiana University, thinks that the scientific method--or how it is commonly taught--is flawed:
The problem is that this scientific method does not encompass all of science. In short, science can be done this way but it doesn’t have to be.
Allain then provides several examples of less systematic scientific research, such as the accidental discovery of penicillin.
As an alternative to the scientific method, Allain sketches out a different approach, illustrated above. He explains:
How about instead of memorizing these science steps, lets focus on the nature of science instead. There are a lot of key elements, but I think I could boil it down to this: make models of stuff. Really, that is what we do in science. We try to make equations or conceptual ideas or computer programs that can agree with real life and predict future events in real life. That is science.