Can you give an example of a piece of knowledge that does not rely on assumptions?

So what?

Bet you can't

That if I drop my cup of tea it will fall downwards rather than upwards?

Bet you can't

That if I drop my cup of tea it will fall downwards rather than upwards?

Only on earth. Making assumptions of gravity, and just because it has done it before doesn't mean it would again.

What if you dropped it onto a trampoline at the same height? What if you dropped it onto a desk at same height? What if you dropped it by waving your arm in the air and it flies upwards

Bet you can't

That whatever I say, some smartarse will contradict it?
That when I die, if my body is buried in the ground, it will rot?

What if the person who responds isn't a smartarse? What if they don't respond at all? What if your body having been buried in the ground doesn't rot due to some persevering soil, biology or maybe some kind of body anti rotting feature like the Egyptians and lots of people do.

That your body will rot rests on fundamental assumptions of soil and biology.

1 + 1 = 2 ?

But a smartarse did respond and you just proved it.

And my body will rot without preservatives etc.

Your subjective belief that I'm a smartarse wouldn't count as knowledge and I could have simply not responded. And that your body will rot is still based on assumptions of decay.

Ah this is an interesting one. The German philosopher immanuel kant believed mathematics was synthetic a posteriori, which means mathematics is not inherently true or false or right or wrong but requires empirical evidence.

How do you know 1+1 is two? You could put two blocks near each other and count them. The act of counting itself is analytic, you can conclude from making general observations a number which isn't in the question. For example we have two 1s but not a 2. But is it knowledge? Does it really tell us anything about the world? Does it not make certain numerical assumptions. It seems to me that simple sums like that also rest on fundamental assumptions we make about arithmetic.

But you had to respond because a smartarse can't help their nature

It's a thread about question I answered if that upsets you go elsewhere lol