PepsiCo, Campbell’s and others are shrinking packages with lower-price options to spur sales.

Opening a bag of chips to find it only half full is always a disappointment, but it turns out the extra space actually serves a purpose. There’s even a name for the empty space in a bag.

It’s a full meal on a plate — carbs (chips), vegetables (I mean, at least salsa or ... The portion is ginormous — four of us split a half order last time I was there — and $3 off during ...

Real reason chip packets half empty is revealed. Opening a bag of chips to find it only half full is always a disappointment, but it turns out the extra space actually serves a purpose.