YOU SAID:

I don't get why people think the earth is flat its obviously round

INTO JAPANESE

私はなぜ人々が地球が平らでその明らかに丸いと思うのかわかりません

BACK INTO ENGLISH

I do not know why people think the earth is flat and its obvious roundness

INTO JAPANESE

私はなぜ人々が地球が平らであると考えるのか、そしてその明白な丸みを知らない

BACK INTO ENGLISH

I do not know why people think the earth is flat and its obvious roundness