I have nothing against you "educating" people about diesel engines ect.
But as has already been said, nobody here is really interested in your teachings.
Your sermons are falling on deaf ears, and forcing it down our throats isn't going to change that. After all this is a laser forum? .
Yes we have a "other" section, and I'd ask that you keep your education to THAT part of the forum.
There is nothing wrong with being passionate about something, there is just a time and place for everything.