We hold these truths to be self-evident:

Eli Manning was not brought back to be a $23.2 million backup quarterback.

You don’t draft a quarterback with the sixth pick to sit him.

“Eli ‘s our starter, and we’re getting Daniel ready to play,” Pat Shurmur said again on Friday.

Daniel Jones must be the finisher.

Because it would be negligent of the Giants not to get him on the field for invaluable playing time experience this season so he can hit the ground running with Saquon Barkley in 2020.

So here now are the Giants, forced to confront an inevitable collision between the irresistible force and the immovable object undoubtedly sooner than even they envisioned.

The immovable object is Manning, who became a 38-year-old square peg in a round hole once Odell Beckham Jr. was traded to Cleveland and it was obvious the Giants were rebuilding, no matter what general manager Dave Gettleman was publicly calling it.

The irresistible force is Daniel Jones, whose precocious gifts, detected by Gettleman and the Giants and few others, cannot and should not be denied during a likely slog to nowhere.

Which means that the immovable object will have to be moved over once it becomes apparent that the irresistible force gives the Giants the best chance to win.

No one knows exactly when that thunderbolt will arrive, but it’s coming, and his standing as a franchise icon cannot save Manning when it does.

As euphoric as the Giants are over Jones and the prospect of Life After Eli, suddenly the flip side is a Life With Eli where, for the first time in his 16-year Hall of Fame career, he will be savaged by boobirds if he struggles getting his team in the end zone and winning, and winning early against a forgiving September schedule.

The gentlemanly Pride of the Giants deserves better, of course, and anyone who bleeds Giants blue should be rooting for One Last Hurrah from him. The reality is with a mostly youthful defense that will have to endure growing pains, with Beckham gone and Golden Tate suspended for the first four games, the Kansas City model that allowed Patrick Mahomes to sit 15 games behind Alex Smith as a rookie does not seem feasible.

You always have to temper observations and conclusions in preseason, but it is eye-opening that Jones is 25-of-30 passing with two touchdowns and he hasn’t had Saquon Barkley at his disposal. Or Sterling Shepard.

Neither has Manning, but he no longer offers the promise of making everyone around him better. Once Shurmur determines that Jones does, a new era will begin.

Manning has the benefit of an upgraded offensive line and being in the second year in this offense. And his offseason training has given him more oomph on his fastball. With Barkley as the centerpiece, Shurmur will be asking Manning to be the classic “game manager.”

As Yogi might have said, Jones can observe a lot by watching Manning when the real games begin and defensive coordinators get serious and plot mayhem.

Manning can take what the defense gives him because of his beautiful football mind. What excites Shurmur and the Giants is that Jones, with his smarts, toughness, resilience, accuracy and downfield bravado, has the makings of a quarterback who will be able to take what he wants.

Jones has given the Giants and Giants fans hope and belief that the franchise will be in good hands. That he has a chance to be their Next Manning. The dilemma for Shurmur is when to place the football, and the franchise, in The Kid’s hands.

“Whatever time we need him to play,” Shurmur said, “he’ll be ready.”

And Daniel Jones sure looks like a young man in a hurry.