There is no way to collect valid statistics on these matters.

I am speaking strictly from experience.

This is not social science, it is experience.

YOU can't contradict any of these statements with statistical evidence, so let's not play logical-positivist with each other. It's not valid philosophy.

Just say what you know, and if you have statistical research evidence in hand, present it. But make sure that you do so in such a way that any sampling bias is laid out fair and square.

My English teacher taught me not to overdo it with fudge words such as "probably" and "may be." I stand by my statements, holding them alive with my own ad hoc assertion until the statistics cavalry arrives.

I stated at the top that taxonomies were very approximate and I stand by that too.

Hehe, very nice chatting with you. I am used to holding my own in abrasive academic meetings and your approach suggests you're one of my kind. But if you are a more civilized type of person, I apologize for my tone.