@Miles - Christi I share your sentiment, but be careful with concluding like that (because flat earth vs round earth is very tricky to conclude and with enough mental gymnastics you can explain the water not bending issue, one possible reason is to say that your bath-tube is nowhere near the size of the earth so you cannot conclude with just that experiment). In my humble opinion it is more important to teach Catholics and everybody the FACT that the earth doesn't move and that it is the center of the universe (which make sense since God wanted to have his incarnation on this place). This Fact that the earth is still and not moving has been thoroughly proven. Each experiment to measure the movement of the earth has failed to detect any, and in fact Einstein had his motivation to invent his theory in part because he disliked the idea of an unmovable earth, he disliked the outcome of the Michelson Morley experiment, which said that the earth velocity was 0. So he thought; "hmmm, how can we explain that this experiment tells us that the earth has no velocity and at the same time to be able to say that the earth moves?"; and he came up with part of his theory to try to explain this "inconsistency", at the end of the day he wanted to solve a problem that was not there because he disliked reality. So he invented some schizoid theory in which time dilates and contracts and space change size and some other ideas that have no use (if you dig deep, because everybody who hears this statement immediately say: "but what about the GPS?" doesn't it needs to be corrected using Einstein theory to be right? and the answer I have came across is that at the end it doesn't (Check the work of Wolfgang Smith, he explains this in one of his books). People keep defending their own abusers (like Einstein, Darwin and Galileo) who have worked tirelessly to destroy the true cosmology, the Christian Cosmology. But we have been conditioned since early childhood to admire these traitors to truth, in a more subtle way that we have been conditioned to admire Hollywood stars, or singers. But it is difficult to people that think they are smart, that have been fooled in most of what they believe with respect to science. And it is hard for them because they forgot that we are on this earth to fight for souls, first, and not to make "scientific" discoveries, which can and has been used to destroy souls (And these people do not even make legitimate science). The ternary that has destroyed Christian cosmology in my opinion is, Copernican-ism, evolution, and relativity. And the more you know the more you realize that at the end of the day you are forced to have a blind faith if you want these "theories" to work because reality doesn't support them as people believe. But with respect to the shape of the earth I cannot conclude, and I haven't found any definitive proof of either model. Read the book "Galileo was wrong the Church was right" It is a 2000 page book that carefully proves that you have to believe on an stationary earth, because of science and because of faith.

@Miles - Christi And people wonder: Why they make such a big effort to lie? And the reason is that they want us to believe that God doesn't love us as much as we are told. Because it is very different to really believe that you where carefully designed to habitate in this incredibly special place (and this predilection can be seen in reality since earth is the center of all creation), so special that the God of Heaven wanted to incarnate Himself here. And so special because we, humans, are his most dear creation, and because His dearest creature His mother was going to live in this place. Now on the other hand we are forced to believe that we are a product of randomness of insignificant energy marbles (atoms) who aimlessly collide with one another and after an unimaginable amount of time of trial and error a bunch of atoms formed a protein and then a cell etc. until they arrive to man, and that our earth is just a rock floating aimlessly in space, doing circles around a giant hot gas. And that we are not that special since "by probability" there must be an infinitude number of other rocks with the same conditions as ours. And that there is no absolute frame of reference, any frame of reference is valid. And since people do not distinguish between the physical reality (the reality in which models, quantities, equations, exist) and the corporeal reality (on which you and I exist) They mix them so they do not distinguish between a model of a phenomena and the phenomena itself. ""Matthew 24:24
For there shall arise false Christs and false prophets, and shall shew great signs and wonders, insomuch as to deceive (if possible) even the elect.
"

Thank you very much for your extensive and very interesting comments. To your very appropriate list I would add a fourth member, Newton and his "law of gravity". I agree on everything you have said, with the only exception that I am certain that the earth, in addition to occupying a central place and being stationary, is flat. And I am not saying this only because of the argument of the water, which never bends -whoever does not see it is voluntarily blind before an evident fact, which is not demonstrable with complicated theories, but verified with our own senses-, but also, and mainly, because the cosmology that emerges from the entire Bible is that of a flat and stationary earth, with the celestial vault above and the infernos below...