Part of that bias comes from having read and agreed with T. C. Chamberlin's Method of Multiple Hypotheses (1890). Or at least liked my take on it. It also has some correspondence to John Stuart Mill's ideas in On Liberty about a marketplace of ideas (1859), which I also liked. The crux is, if we consider only one idea/hypothesis we are liable to be overly protective of it, or overly hostile to it. Either way, we do not arrive at the best hypothesis for continued work. Chances of us having started by selecting the best of all possible hypotheses, out of the infinity which could be generated, are essentially zero.
So, instead of starting with:
- Make a hypothesis about those observations
- Make a prediction from that hypothesis
- Run an experiment to test the hypothesis
- Make multiple hypotheses that explain the observations
- Examine the hypotheses for how/where/when they lead to different predictions
- Run an experiment to distinguish between stronger and weaker hypotheses