Nope, that's the word I intended. Strictly speaking "solipsism" has a slightly different meaning, but in the past several years colloquial usage has given the term a further sense of "if I don't know something, no one else can know it either" when used descriptively.
You are telling a lawyer of 30 years of practice to look up what caveat means? LOL!
That do [sic] explain alot [sic]...
I never heard of that colloquial meaning (must be [de]generational), and it's certainly not in the dictionaries. But I am not surprised, given the narcissistic nature of the spoiled brats, to come up with such a distortionif I don't know it, then no one else can know it."