Even for the physicist the description in plain language will be a
criterion of the degree of understanding that has been reached.
-- Werner Karl Heisenberg (1901-1976) German physicist
ivial adj.
1. Too simple to bother detailing. 2. Not
worth the speaker's time. 3. Complex, but solvable by methods so
well known that anyone not utterly cretinous would have
thought of them already....