Let's cast aside for a moment that unlike gravity, the big bang, if it occurred, is impossible for a human to witness first hand. The understanding of gravity

Let's cast aside for a moment that unlike gravity, the big bang, if it occurred, is impossible for a human to witness first hand. The understanding of gravity had a tectonic shift about a century ago. Imagine if scientists declared that Newton's model of gravity was the final word, and that it was heretical to question it. These things are called theories, not facts, for a reason. Such things happen all the time in the history of science. As another example, think about the phrase "subatomic particle" and the sequence of mistakes that must have occurred to arrive at such wording. Paradoxically, instead of the history of science inspiring humility, it seems to encourage arrogance among some. Is the ego a friend or enemy of scientific advancement?