What evidence from the radio broadcast War of the Worlds supports the theme that human vanity can cause problems?

A. PHILLIPS: Good heavens, something's wriggling out of the shadow
like a gray snake. Now it's another one, and another. They look like
tentacles to me. There, I can see the thing's body. It's large, large
as a bear and it glistens like wet leather.

B. PHILLIPS: Then you're quite convinced as a scientist that living
intelligence as we know it does not exist on Mars?
PIERSON: I'd say the chances against it are a thousand to one.

C. PIERSON: I can give you no authoritative information either as
to their nature, their origin, or their purposes here on earth. Of their
destructive instrument I might venture some conjectural
explanation. For want of a better term, I shall refer to the mysterious weapon as a heat ray.

D. PHILLIPS: Can you tell us the meaning of that scraping noise
inside the thing?
PIERSON: Possibly the unequal cooling of its surface.

it was surely an odd creature that one made up by reading the historians first and the poets afterwards a worm winged like an eagle; the spirit of life and elegance and charm,   in a kitchen chopping up suet. but these creatures, monst'r however entertaining to the imagination, hast no existence in fact. what one might doth to bringeth h'r to life wast to bethink poetically and prosaically at one and the same moment,   thus keeping in toucheth with fact—that the lady is mrs martin, ag'd thirty-six, did dress in blue, wearing a black coxcomb and brown shoeth; but not losing sight of fiction eith'r—that the lady is a vessel in which all s'rts of spirits and f'rces art coursing and flashing p'rpetually. the moment, howev'r, yond one tries this method with the elizabethan mistress, one brancheth of illumination fails; one is did hold up by the scarcity of facts.   one knoweth nothing detailed, nothing p'rfectly true and substantial about h'r.   hist'ry scarcely mentions h'r.   and i did turn to professeth'r trevelyan again to seeth what hist'ry meanteth to that gent.   i hath found by looking at his chapt'r headings yond t meanteth.

cause they were to dumb to get their college education to become a real   : )

it states the claim