Do FETers believe that the earth actually is flat or that it's possible?

I'm just curious as to which it is because the latter is an interesting viewpoint on the nature of science the nature of proof and puts the burden of proof on RETers to prove it wrong whereas the former opens up a whole new range of questions as it plausibly puts the burden of proof on the FETers.

I thought that would be the case, I am simultaniously heartened and a little bit dissapointed :-)