Do not leave Joe Harris open. Under any circumstances. You can make a lot of choices, do a lot of things. But understand this: Do not leave Joe Harris open.

When the Brooklyn Nets re-signed Harris to a two-year, $16 million deal last summer, it didn’t make a splash. It barely registered on the chyron. However, it was one of the best deals of the offseason for value. Not only for the quality of player relative to price, but for the specific value of Harris to what the Nets do.

Under Kenny Atkinson, the Nets have a pretty simple formula: They’re going to out-math you. The Nets take the sixth-most 3-pointers per 100 possessions in the league and allow the second-fewest.

Here’s what Harris said in an expansive interview with our Rob Perez (which you should go watch RIGHT NOW): “Obviously I’m fortunate to be in a situation here in Brooklyn where a lot of our offense is predicated around getting shooters shots.

“Kenny, our coaching staff, front office — [they’re] really big on guys taking 3s. They don’t shy away from it at all. They’re very big in analytics. They want guys taking a lot of 3s, so for me, I come into the situation, that’s my game. ”

The Nets do a lot of interesting things to get Harris into his spots.

Here Harris sets a transition or mid-transition slip screen, then immediately runs off a big, burly screen from Jarrett Allen:

(Allen, by the way, is sixth in the league in screen assists.)

How good has Harris been this season? By Synergy Sports he ranks:

No. 1 in jump shot effective field goal percentage in the league among those with at least 100 possessions. He has an eFG of 70.4%.

No, no, let me say that again: Joe Harris is literally the most efficient jumpshooter in the NBA this season . Yes, even more efficient than Curry (who is fourth).

Yes, even more efficient than Curry (who is fourth). In the 99th-percentile in catch-and-shoot points per possession.

In the 98th-percentile in shooting off screens.

In the 75th-percentile in shots off DHO (dribble hand-offs, often behind a screener).

No. 1 in 3-point percentage minimum five attempts per game.

The only shooter you can really compare Harris to this season is Curry.