We don't know more than we did. We have a strong belief that our cumulated knowledge, tools and infrastructure are leading to more accurate knowledge. We accomplish technological advancements that comfort us in the idea we know better. That's all.
Science could be made a verb, but like wisdom, calling something science doesn't de facto make it so.
We actually do know more. Sure, physics is basically modelling and observations. Our current models might be completely wrong - even if their predictive power is far greater.
But we've also made some genuine proofs. For example, we know that Fermat's last theorem is correct. That was suspected, but not known.
Yes, this applies basically to all of maths - and even to other disciplines that produce proofs. Another example: we know that one model of gravity permits black holes, wormholes, and warp drives. Sure, the model might not accurately reflect reality. But still: this is something we know nowadays, that we didn't know 105 years ago.
Not to mention all the things we collectively have done - we know it's possible to leave Earth, to live in orbit for a while, to convert sunlight directly into electricity, that it is (barely) possible to run the 100m in under 10 sec, what the earth looks like from a distance, how to make fusion bombs, how to fly... we know a lot more than folks from even the early 1900s, let alone further back.
Science could be made a verb, but like wisdom, calling something science doesn't de facto make it so.