Re: Flexure vs. Cable Action in a solid rod.

Richard Calvert wrote:

... formally obtain a second opinion (signed and sealed)...

I'm curious about the advisability of "signing and sealing" a second opinion. What exactly are you vouching for there with your seal? What is your scope of responsibility?

I submit that sealing a letter giving your opinion on a design topic where you are not directly responsible for the design, etc., is not wise.

In that case, should engineering professors "sign and seal" their textbooks?