Again, I am not asking you to believe in my opinion. I am explaining demonstrable fact to you. If you are unaware of physics, that's a shame, but that does not change the science.

If you like, you can remain ignorant of physics. That is your choice. Or, you can watch this video of a cycle traveling across a lake at ~30mph.



Also, for the record and as I already explained, if you can only judge an argument based on who is making it, then you simply are not sufficiently informed on the topic at hand. In fact, that is a popular logical fallacy called "argument by authority". Authorities can be, and often are, wrong -- as recently shown quite famously by the realization that the conventional wisdom regarding the efficiency of skinny, high-pressure tires was dead wrong, despite being believed by almost everyone for decades.