eli5 how do we know nothing is faster than light?

Question

eli5 how do we know nothing is faster than light?

In: 452

Answer 1

We have no law that accounts for faster than light travel at the moment so we can’t theorise such a thing using given laws. We can’t see the either as they are so fast (if they exist?)
These laws change with time, we didn’t know about sub particles before someone theorised them (higs bosin?)