She says the bond between service dogs and their handlers makes the animals uniquely qualified to deal with PTSD symptoms, including dissociative episodes, or flashbacks.

VOA: standard.2010.05.18

So, summarizing better, assert is something you put in to say to the user, make sure you're giving me input of this type, but I'm going to guarantee you the rest of the code works correctly. Exceptions and exception handlers are saying, here are the odd cases that I might see and here's what I'd like to do in those cases in order to try and be able to deal with them.

所以更好的总结下,断言就是你放在那里告诉用户,保证你输入的是这种类型的,但我能保证剩下的代码运行正确,异常和异常处理做的事,这里有些我能预期的异常情况,并且这里有些情况,我能尝试处理。

麻省理工公开课 - 计算机科学及编程导论课程节选

The handlers note where the scat is found and take a sample for analysis to determine if it is from a tiger and to check the animal's health.

VOA: standard.2010.02.22