Ben Nelson @sunjieming

Co-founder and CTO of Knetyc. Previously Co-founded @bloomtech Utah, USA Joined March 2013

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Ben Nelson @sunjieming

a week ago

These posts are hilarious to me Yeah, the land-the-booster engineers failed to plan for a physics 101 problem in their area of expertise

JerryRigEverything @ZacksJerryRig

a week ago

You know the reason your Stanley or Hydroflask is so good at keeping your water cold is because there's a vacuum inside the walls of the thermos. Heat can't conduct in a vaccum. And "radiated" heat is ineffective at the temperatures processors operate at. This satellite

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Ben Nelson @sunjieming

a month ago

@Manhattva There’s also a massive amount of brackish groundwater in Utah that’s about 1/2 the cost to desalinate. It would like triple Utah’s total water iirc

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Ben Nelson @sunjieming

a month ago

@robertgraham Utah also spends 40x the max projected water usage at peak capacity of all data centers on alfalfa exported to China.

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Ben Nelson @sunjieming

a month ago

@SpaceKoala And to make it worse - 1/3 of Utah’s alfalfa crop is exported and the biggest buyer is to China. We’re literally exporting 40x the max projected data water usage directly to China in the form of hay cubes.

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Ben Nelson @sunjieming

3 months ago

@treblewoe @NormanDodd_knew Gotta preposition the rocks in orbit

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Ben Nelson @sunjieming

4 months ago

@JMGregorchuk We do municipal code compliance checks against development plans to speed up permitting - among other things that build off that core framework Property developers and civil engineers are our primary users

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Ben Nelson @sunjieming

4 months ago

@RobJGonzalezFL @JeffBezos At Knetyc we’ve built this exact product that he’s talking about. We’re a startup with an AI system for analyzing development plans against municipal codes to dramatically shorten approval timelines. We should talk knetyc.com

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Ben Nelson @sunjieming

4 months ago

@spifftoshi @the_transit_guy knetyc.com Also feel free to DM me with any questions - I’m the CTO

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Ben Nelson @sunjieming

4 months ago

@SmallCapSnipa We’ve built exactly this at Knetyc The AI cross references the building plans against the municipal codes to verify compliance and identify gaps

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Ben Nelson @sunjieming

4 months ago

@quasistable @tyler_m_john Samuel means “heard by God” in Hebrew too

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Ben Nelson @sunjieming

5 months ago

The left’s sudden condemnation of Hamas after years of silence shows @SenFettermanPA may be the only major politician over there thinking from first principles.

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Ben Nelson @sunjieming

9 months ago

@Kasparov63 It’s a military/police cultural slogan. That’s all it is

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Ben Nelson @sunjieming

9 months ago

@MAGAOracle @cremieuxrecueil I have lots of LE and military family who are Christian and they all talked about Viking stuff from time to time too

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Ben Nelson @sunjieming

9 months ago

@bonchieredstate I bet the shooter was aiming for the chest and overshot because he didn’t factor in the slope

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Ben Nelson @sunjieming

9 months ago

@bonchieredstate My first hunt at age 13 I made a 200+ yard shot through trees on a moving target with a .308. People are saying he had to be ex military or something but the shot alone doesn’t indicate that

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Ben Nelson @sunjieming

9 months ago

Yeah, it's not intuitive. Imo the shooter was aiming for the chest and shot high Here's an example calculation AI put together: Slant range (hypotenuse): 500 yards (~457 meters) Downward angle: 45° Horizontal distance: 500 × cos(45°) ≈ 500 × 0.707 = 354 yards (~324 meters) Flight time along hypotenuse: ~457 / 800 ≈ 0.571 seconds Drop if using slant range (as if flat at 457 m): ~1.60 meters (as above) Drop using horizontal distance (as if flat at 324 m): ~0.5 × 9.8 × (324 / 800)² ≈ 0.5 × 9.8 × (0.405)² ≈ 0.80 meters Why horizontal? At 45°, the perpendicular gravity effect is halved (cos(45°) = 0.707), so sag is much less. Using just the hypotenuse flight time overestimates drop by ~100%, causing significant high impact. Use data for 354 yards instead

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Ben Nelson @sunjieming

9 months ago

It's called "The Rifleman's Rule" Gravity pulls the projectile downward vertically, regardless of the shooting angle. The drop (how much the projectile falls during flight) is determined by the time it takes for the projectile to cover the horizontal distance at its horizontal velocity component, not the full slant distance. Using the slant range would overestimate the time of flight for gravity's effect, causing you to overcompensate (aim too low) and hit high If you have a sloped distance to the target of 200m but a horizontal distance to the target of 100m you're going to be closer to the real bullet drop amount by aiming as though the target is 100m away vs 200m away. It's counterintuitive but the math proves it out. It's common for inexperienced marksmen to overshoot targets when they're shooting downwards. It's especially critical if you're like on a ridge and shooting down into a draw on a steep slope. The effect would have been minimal in the assassin's shot yesterday though because he wasn't shooting at a super steep angle - maybe a couple of inches