Inspector Morse investigated a high-end art gallery heist. The thief cut a circular hole through a thick glass display case using a glass cutter. The heavy glass disc fell *outward* onto the marble floor outside the case. Morse smirked and told his rookie partner that the thief was an amateur who didn't understand physics. Why?
Glass cut direction
When cutting a hole in glass from the outside to reach inside, if the glass disc falls outward, it means the pressure was applied from the inside out. To retrieve an item inside a case, the cut glass piece must fall inward into the case, or the thief cut it from the wrong side.
About this riddle
Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.
Difficulty: Medium. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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