[megatherium]

"Intelligent Design" is entirely based upon inference, and so is "Evolution."

No, evolution is based on testable predictions. For instance, if two species appear to be closely related (having a recent common ancestor), do their genomes when compared share more "spelling errors" (such as endogenous retroviruses) than do species that are less closely related?

[I-ambush]

Neverthless, evolutionary theory is ultimately based on untestable assumptions; eg., that mutations occur randomly, as opposed to being caused by an intelligent designer.

[ml/nj]

For instance, if two species appear to be closely related

Similar testable hypothesis:

For instance, if two buildings appear closely related it is more likely that they have similar elevator configurations than two dissimilar buildings.

ML/NJ