the up-down factor speech

Somewhere in the middle of this sci-fi mess, John Carradine gives a long-winded speech about how life exists in the center of the earth(to say nothing about where the light comes from). My friends are convinced that whenever a film has someone making a speech either on technical matters or other logistics, its a sure sign the film is a loser. We believe the blueprint for most bad movies employs either a narrator or character trying to explalin to the audience whatever bizarre concept the director wants us to swallow. This film may be the impetus for many stinkers throughout the years. We saw "The Unborn" the night before and it too had a detailed explanation for why and how such a creature exists. We were on to the phony speech right away and began to chuckle. Kris Kristofferson has a doozy of one at the end of "Rollover" and even Gene Hackman is guilty on occasion.