Ski you said
You have been gathering all the data you need since the day you were born
False:
babies are bothered about the tits and the hugs, there is no consideration for the possible shape of the earth.
Toddlers are bothered about the mud in a plantpot, the dirt on a carpet and sticking as much stuff in their mouth as possible.
So at least 3 years of your life is spent collecting data for other means. Rather than is, or is not, the earth round?
That the earth is flat is so self-evident I sometimes wonder at the ability to deny it.
Self-evidence /= true, solipsism is self-evident to everybody in the world. furthermore the emotion that drips out of so self-evident means you have some kind of sentimental attachment to it.
I sometimes wonder at the ability of a lot of people, curiosity is a good thing. Maybe you should follow that hunch.
That you deny the data given you by your own senses, is entirely within your purview.
I personally (I dont know about the other guy) dont deny the data of my senses, just their accuracy, my senses are built on certain survival instincts and so are built in such a way as to be bias towards certain information above others, even if that information is contradictory. The questioning of our senses and our instincts has lead to much fruitful breakthroughs in all areas of human knowledge, not just cosmology.
I think primarily this must be a case of methodology, as Roundy has indicated.
Firstly its method and secondly trusting your senses is not a method but faith.
I find your methodology to be suspect, as no doubt you find mine to be.
Its not a question of his method or your method. Its whether the method to construct the theory of the flat earth is suspect or not, and converslly, if the round earth is suspect; they can both be suspect; they can both be not-suspect. But upto now I see no method used in the construct of the FET, other than the RET is wrong therefore FET is correct and
look around the first is a clear logical error called assuming the antecedent. and for the second one see above.
[edit: the last sentence is clearly using the wrong fallacy]