"on accident" -or- "by accident"

Very cool! Math nerds unite!

Very confused and some times becomes blank also in the usage of English grammar.By accident…as I say I have met by accident.

Getting off topic, I once used google analytics to ‘prove’ there was a significant increase in searches combining tents and a certain brand around the summer solstice. I see no reason to believe this has anything to do with people planning their vacations and everything to do with the solstice :wink:

You’ll like this:
North American English Dialects, Based on Pronunciation Patterns
http://aschmann.net/AmEng/

http://spark-1590165977.us-west-2.elb.amazonaws.com/jkatz/SurveyMaps/

NC State University, dialect map.
Use the drop down filter for “Question”- no.98 is “On Accident/ By Accident”
Flick between the “Composite” and “Individual” tab:

That’s torn it… … I’ll be reading through the other 122 questions for hours.