@raprap,
Your credentials are that you claim, without any justification, to be an engineer, and you consistently post idiotic commentary.
Were you as literally bound when Obama said he had visited 57 states?
I doubt it.
Since I never claim to be an expert...bub...there is no reason for me to establish my credentials.
BTW, if your statement that you "were" an engineer is indicative of the fact that you are now retired, how pathetic is your attempt to be seen as someone much younger than you are.
As "raprap" the young liberal you were a clown, but as "raprap" the old liberal fart you are that much more of a truly sad clown.