I understand that as Lamarckism is an evolutional theory , any discussion about it would weaken the thesis of evolution theory against ID.
That's just too ridiculous. Discussing evolutionary theories makes ID more acceptable?
Classic evolutionists have to face this fact: ANY MUTATION DETRIMENTAL, NEUTRAL OR USEFUL IS A GUIDED BY THE ENVIRONMENT MUTATION.
And were that 'fact' written in a language folks can understand, such as English, they just might try to face it.
Until then...
Surely they had ignored guided mutations, but not excluded it.
Just what are you hoping to prove?
Love your enemies!