Intelligent Design- What's the Point?
The point is to (be able) conduct scientific research and be allowed to reach a design inference if that is what the data, evidence and observations warrant.
That's it. Then I remind them that:
1) There is only one reality behind our existence and the exitence of what it is we are trying to explain.
2) Science is a tool for determining that reality.
3) You can neither legislate nor adjudicate what "reality" science can deal with.
Also as Justice Lewis Powell wrote in his concurrence to Edwards v. Aguillard:
(A) decision respecting the subject matter to be taught in public schools does not violate the Establishment Clause simply because the material to be taught ‘happens to coincide or harmonize with the tenets of some or all religions’.”