Why is this important?, Well, THC, tetrahydrocannabinol is a problem because a Psychoactive derivatives frequently induce impairment. What sort of impairment you might wonder? It can stimulate or depress the person's central nervous system, resulting in hallucinations or a severe disruption or change in motor function, thinking, behaviour, perception, consciousness, or mood.Cannabidiol, CBD, on the other hand is a non-psychoactive derivative, which typically does not cause impairment. But it doesn't end there.