Ten years from now, we may recall this January the way we do the summer of 1991, when a team none of us had paid much heed grabbed us by our collars and made us watch. Ten years from now, we may remember these Hawks growing into a colossus – what other word fits an aggregation that’s 32-2 since Thanksgiving? – the way we beheld the Braves’s ascent from worst to first.

Ten years from now, we may look back on games like Friday’s in the manner we pressed that September series against the hated Dodgers into our memory books. Ten years from now, we could point to Friday as one of the moments when we knew – knew, as opposed to hoped – that all things were really and truly possible.

For the first time in 33 days and 17 games, the Hawks faced a fourth-quarter deficit. (That’s among the astonishing stats of this or any millennium.) Nothing was coming easy against an excellent Portland team, and matters were getting more difficult by the minute.

The splendid forward LaMarcus Aldridge was en route to scoring 37 points. The Hawks were missing free throws. DeMarre Carroll, their best perimeter defender, was too sore to play. Thabo Sefolosha, his replacement in the starting five, lasted 141 seconds before tweaking a hamstring. A team that has become a beautiful machine had developed a cough, and you couldn’t see all of the above and not think, “This could be the night the streak ends.”

But no. Five points down after three quarters, the Hawks won 105-99. Over those final 12 minutes, they outscored the Trail Blazers 15 baskets to seven, outshot them 71.4 percent to 30.4 percent. In their stiffest test since MLK Day, the Hawks played their best offense and their best defense in the fourth quarter, which is the time to do it.

We’ve spent the past month trying to identify the reasons the Hawks have done nothing but win, and here’s another: They trust themselves and their system. They know Mike Budenholzer’s offense will avail them of good shots if only they go where they’re supposed to go. They know they’re good enough shooters to make those shots. They also know – here’s the part that’s different from last season – that they can guard the opposition better than they’re being guarded.

There’s power in such faith. There’s the power that flows from believing you’re going to get better looks over 48 minutes than the other team, that you pass and shoot and defend too well to be cornered for long. At halftime the Blazers had made 55.1 percent of their shots to the Hawks’ 44.4 percent – and Portland’s lead was a skinny point. By game’s end the Hawks had shot the better percentage and driven the ball often enough to earn twice as many free throws. (Not a small consideration on a night when you miss eight of 22.)

Down to cases. On the first possession of the fourth quarter, Dennis Schroder drove for a layup. The 21-year-old had some moments when he looked his age, but he changed the game when it needed changing. He found Mike Scott on the left wing for the tying 3-pointer and found Kyle Korver at the top for the trey that made it 81-76. The Blazers would never lead again.

Schroder’s fourth-quarter line: Six points, four assists. That’s your backup point guard, folks. That’s the guy from Germany with the streak in his hair and the flash in his step. To see him this January is to recall what we said of Glavine and Avery and Smoltz in September 1991: “And they’re only going to get better.”

With 2 ½ minutes left and the Hawks up four, Damian Lillard hoisted a 3-pointer that missed. Chris Kaman saved the rebound along the sideline and flipped it toward Wesley Matthews between the circles. Korver outfought Matthews for the ball and shoveled it to Al Horford, who found a streaking Jeff Teague for the clincher.

Really, though, you’d known the Hawks would win once Schroder did his bit. You knew because winning has come to be all they know. At 18 straight, this team is tied for eighth place on the list of longest single-season NBA streaks. And those of us who’ve watched it happen … well, we’re going to remember we did.