Entrepreneurship is always about trying to prove something: that your product, service, or method is the best. You need the flexibility to make new assumptions and learn from your errors, but you also need strong convictions supported by data and your own experience.
A company's culture is a guiding principle that acts as a behavioral compass. Corporate competition is thus a clash of philosophies. The company with the best philosophy--and the best ability to articulate it--wins the heart of its customers.
Convincing others that your philosophy is best is as hard as coming up with one. In fact, the best philosophy needs no convincing. I'd go as far as to say trying to convince people is a waste of time. In my experience, no one really wants to be convinced of anything.
Time is better used leading by example and working with those who don't need convincing. Changing mentalities always starts from within, so the goal is to trigger an introspective process in others. To do that, arguing with others is not needed: you just have to be skillful enough to play with your audience's mirror neurons. This is the reason why fiction, journals, or biographies are so powerful: a novel doesn't judge you, it merely shows a possibility.
If you want to convince someone of doing something tomorrow, do it yourself, document your research process, and share the results.