JWs believe the only truth in in Gods word. To listen to others explanations of science could lead them astray and loss of faith, fiends and family. See bible quotes.When someone wants to restrict what you can read and doesn't respect your capability to study and interpret facts for yourself, it's time to get a little skeptical.
Anyone threatened by scientific fact and objective observation is hiding from the truth.
See that there be no one who shall lead you away as a prey through philosophy and vain deceit, according to the teaching (including evolution) of men, according to the elements of the world, and not according to Christ
1 Tim 1:19-20
Cling to your faith in Christ, and keep your conscience clear. For some people have deliberately violated their consciences; as a result, their faith has been shipwrecked.
"Brother Hymenaeus and Alexander are two examples. I threw them out(of the church) and handed them over to Satan so they might learn not to blaspheme God."
For your part, brothers, do not give up in doing right. But if anyone is not obedient to our word(Watchtower) through this letter, keep this one marked, stop associating with him, that he may become ashamed. And yet do not be considering him as an enemy, but continue admonishing (by shunning) him as a brother (until he or she repents or is excommunicated).