I agree with the previous answers and will just add a thought on how my approach has developed on agreeing with someone else’s id.
When someone has either finessed my higher level taxon id with a lower level identification or disagreed with my identification, I might go do my own research. Sometimes I’ll ask a question like:
@---- , I researched the differences between [species x] and [species y] and couldn’t easily see what details were in my photos that you felt identified it as [species x]. Can you help me out? (I often add text that explains that I’m not challenging, just seeking to be educated).
Or, similarly: @— , my research indicates that [species x] will contain [this detail] but I don’t see that in the photos. Was there another detail or some other information I could have looked at to help with this id?
Whether I ask questions or just do research, if I feel I can finally make an id that I feel pretty confident in, I will often (I should always, but it’s more ‘often’ than ‘always’) show my work. I explain (in a comment) what I was looking at that made me think it was [species x].
That serves a few purposes for me.
A) it shows I did my homework and didn’t just click ‘agree’ with no personal knowledge
B) if someone challenges me down the road, I’ve got my research at my fingertips. It can be hard to track down my research sources 6 months out. (I often add links or citations to sources I used)
C) I imagine that some other person will stumble across my notes and get some info they’ll find useful. I doubt it, but I like to imagine it. :-)
D and finally, it helps cement knowledge in my head. The research I’ve done on differentiating two species of Crescent butterflies is easy for me to re-find in those comments and I remember it more easily having written it out a few times!
I don’t think one needs to do this. It’s just my way. But I think it helps one decide if agreeing with an id is done in good faith and knowledge or just for agreement’s sake. Just the other day I had to walk away from an id feeling I didn’t personally feel I had the skill/knowledge to agree - even with my own research - even though I trust the person who made the id.