As Anindya said, before you learn you need patience, humility. After you learn also you need patience,humility. It is unfortunate that people with Knowledge and experience levels of Mr Luf have been inappropriately addressed.

Ego neither helps in your pipe stressing jobs nor in your daily life. Afterall you have to work with people of different attitudes till you retire. Companies would have bought encylcopedias and not people,had it been just knowledge.

Balu...I sincerely request you to apologise to Mr Luf for that language.

Cheers........