What could happen if they were exposed to unidentified plants? Lots, ranging from mild rashes to death. 'But Professor, even if we know what the plant is, we may still be in great danger if we don't know how to defend ourselves. For example, if someone was caught in Devil's Snare, unaware that its movements could be stopped through exposure to bright light, they would be strangled anyway, even having identified the plant. So it is important to know what makes a dangerous plant stop.' Wait, what were they talking about again? Her answer was very far from the point, but hey, it was outside the box. Way out.