This is about to be slightly off topic, but: You don't need to apologize for questioning. You should be encouraged to question. I've noticed this trend lately (

This is about to be slightly off topic, but: You don't need to apologize for questioning. You should be encouraged to question. I've noticed this trend lately (some here, often on askscience/historians) where people preemptively apologize for asking for sources. Just because you question their sources does not mean you are personally attacking them.