Finch is the smartest man John has ever known, smarter than him by far, but his strength exists in computers, in plans, not in execution and that's why John worries. His limp prevents him from doing what needs to be done physically, it prevents him from running when it's necessary, and with Samaritan, it's often necessary.

What he can do is remind himself they're a team. Together he has to believe Finch and Root and Fusco can find their way back to each other and do what needs to be done. He has to will himself to forget how they've lost others. How Carter died. How Shaw was taken.

"I'd like to say it's as easy as that," John says with a smile. "But I think we both know it isn't. When all of you together make up a unit, when each of you is just a piece of what's necessary... well, it's harder than that."