If companies (and the people that work in them) are not sufficiently curious, they need to be aroused.

FORBES: Curiosity Didn't Kill The Cat, It Created The Mousetrap

"You need to actually be able to directly measure how aroused the player is -- what their heart rate is, things like that -- in order to offer them a new experience each time they play, " Newell said.

ENGADGET

Knox's odd behaviour after the body was found also aroused suspicions - she was reported to have performed a cartwheel and done the splits while waiting to be questioned by police.

BBC: Amanda Knox guilty of Meredith Kercher murder