It's been a while since I was on this forum.
Evidence is cheap and easy to come by; so what makes a theory scientific? firstly you have to have a set of empirical data (which can be counted as evidence, though empirical data can be used as counter-evidence, aswell) and a system of logically consistent statments have to be put forward (a theory), which explains the empirical data, but which can also be easily falsified, by the falsification of even one of its statements.
when someone claims something, the burden of proof is on them: thinkingman never claimed anything, he asked for evidence and the guy with "the best avvy" automatically assumed thinkingman was a globulist (although this might be true, it has no bearing on the argument what-so-ever, and shows ad-hominem tendencies). the evidence from observation is cheap, because observation without a theory and furthermore a philosphical method is easily usurped by people who do not understand how argumentation in science and philosophy are carried out.
Science does not look for truth, only consistent explanations (theories) for gathered data; when it comes up with an explanation for the data it tries to falsify the theory, and when it is not falsified (but there are clear falsifiable statements within the theory) at each test it survives (which means that it is corroborated, though not claimed to be true). if the flat earth is a theory worth taking up, it has to show why its model explains all the data that the spherical model explains, but better and more concisely. Any claim to conspiracy immediatly refutes your argument, unless the conspiracy theory can be conclusively falsified, and the means for how it could be done properly explained (otherwise the claim of conspiricy is a red-herring, used to conceal irrationality). I am neither for nor against the flat-earth theory.
the most important part of a theory is not its evidence, but how it fits and incorporates all evidence (that can be repeatedly gathered) and its potential to be (intersubjectively) falsified.
as, hopefully, a few of you can tell this is a Popperian view of how science is though to be done. which seems to be accepted by the majority of scientists, though also challenged in the philosophy of science, on the basis that its rules are too demanding. if you want to discuss the philosophy I am more than up for a little discussion of these issues.