Science is not a religion, nor is anyone else saying science holds the answer to everything. Science is a tool for proving things folks guess might be true. Experiments either prove or disprove the guess, then other people do the experiments also to verify. Scientists bend over backward to concede that what they are proposing could be wrong, and give other scientists every opportunity to prove them wrong.

When a hypothesis has been proven many times by many experiments around the world, that hypothesis becomes a "theory". So, the word "theory" has a different meaning in the scientific sense than it does in common usage. A scientific theory, like the theory of gravity, the theory of electromagnetism, or the theory of evolution, has the weight of a fact, rather than the unreliability of a guess.

Meanwhile, the other system of belief, Religion, claims to have divine knowledge which doesn't require any beliefs to be updated in light of new evidence.

Science today is very different from what "science" would have meant to someone from earlier days, precisely because the scientific community is always updating their store of what knowledge is true what what knowledge is not true.