Imagine, for a moment, an infant. She's learning to crawl, exploring the world and objects around her. One of those objects is an edible gummy, containing enough THC (tetrahydrocannabinol, the psychoactive ingredient in cannabis) to cause intoxication, seizures, trouble breathing, and changes to heart rate and blood pressure. She puts it in her mouth, swallows, and when the poisoning effects set in - sometimes hours later - her parents panic.