When it comes to a crisis, you shouldn't do this "in midstream"
[DOC] [TLE] Lesson 3: Brain and Cognition [PAR] After completing this lesson, you should be able to accomplish the following: .... 
she explains the idea of "switching horses in midstream" in an abstract way; this 
... states its meaning as, "when you are in a crisis, you shouldn't switch your 
leaders.