Pumpkin pie spice latte
No, absolutely not. People don't even know themselves completely. With the previous rambler wrote was correct. Life changes. Situation change. Hormones change. Mental health status changes. Emotions change like if we had something traumatic happen that could change someone forever negatively. Because of this, people are so unpredictable. They're unpredictable to themselves. So naturally, they would be unpredictable to us, an outsider. I think the only real protection we have is to be very cleanly aware of what people are doing and saying. Watch their patterns. Watch the inconsistencies of what they say or what they do. If possible, maintain your distance and if further possible, completely removed them from your life. Obviously we cannot do this with family members or neighbors. And I believe that when someone makes you truly uncomfortable, or someone you know feel uncomfortable around someone else, take heed. You do what you have to do for yourself and support the other person. They may not do what you think they should do in that situation but support them. Caution caution caution. Sorry for your loss. 
CG🔥
No, we keep changing.