While I wouldn't call my late mother "crazy," I couldn't help but notice the striking similarities between dealing with the crazies you describe here and caring for someone who is suffering from Alzheimer's Disease: At a certain point, I realized I could not persuade her that it was Tuesday if she decided it was Friday. One big difference: In dealing with a loved one, what day it is ceases to be important. In business, weed out the crazies before they can do more real damage.