Truth is truth.
Jesus Christ is the truth.
If one denies just ONE SINGLE Catholic dogma, he is a condemned heretic and he will find himself in Hell for eternity unless he repents.
So apparently truths hang together, and removal of one truth unravels many others.
I believe that you either LOVE the truth, and you want all truth, or you are apathetic, in which case you might not be so adept or successful at reaching the truth about Catholic things as well. Especially in a time of Crisis like we live in today.
So I believe all truths are important -- at least those which touch on the Faith.
Which baseball player made the most home runs last year I don't care about, because that is trivial. It doesn't matter.
Who did 9/11, however, most certainly matters. The issue of 9/11 and the War on Terror touches on the government, tyranny, the Jєωιѕн question, and my own freedom.
Likewise, the truth about Geocentrism touches on science, religion, Fɾҽҽmαsσɳɾყ, God, and creation. I'd call that pretty important.