If you disagree without evidence, you’re not wrong. You can propose an alternative theory that is consistent with existing evidence and it’s just as valid as anybody else’s. The mission is then to find evidence which disproves one theory or the other.
It needs to be “if you disagree without evidence.”
They can leave that whole “if you’re not a scientist” bit in the rubbish bin.
If you disagree without evidence, you’re not wrong. You can propose an alternative theory that is consistent with existing evidence and it’s just as valid as anybody else’s. The mission is then to find evidence which disproves one theory or the other.
Conjecture is fundamental.