Hacker News: paj26

New comment by paj26 in "US DOT deleting bike lane references"

paj26 — Mon, 27 Jul 2026 22:33:43 +0000

How do children get around? They bicycle. For a party claiming to be pro-life, pro-family, pro-child, they don’t act like it.

New comment by paj26 in "Microsoft builds MacBook Pro rival with NVIDIA-powered Surface Laptop Ultra"

paj26 — Tue, 02 Jun 2026 07:13:34 +0000

I similarly bought a surface laptop during Covid WFH - better Remote Desktop experience for the windows shop I was working at. Assumed that spending the extra for premium Microsoft hardware, “it just works” - not at all. I ended up using my Mac’s USB-C Ethernet dongle because the dock would just lose the Ethernet driver. Insane for an ecosystem fully owned by one company, but very telling of the company.

New comment by paj26 in "Why does it take so long to release black fan versions?"

paj26 — Sun, 03 May 2026 07:17:16 +0000

For the same reason a winglet is used on an airplane, or a ducted fan is more efficient than a propeller: there is a large pressure difference on the end of a wing or propeller, and the high pressure side will jump around to the low pressure side and cause a tip vortex. This causes an induced drag, which moves the lift vector backwards (as drag, but not skin friction drag). Higher aspect (think wind turbine blades or glider wings) minimise this, as do winglets or ducting.

New comment by paj26 in "Urea prices"

paj26 — Thu, 12 Mar 2026 06:59:45 +0000

Not sure which natural gas that’s referencing, but looks to be a US index (Henry Hub or so) - note the peak corresponds to a cold snap, not the Iran war. Natgas is tricky because it’s: difficult to store and difficult to transport (aside from well-established pipelines), so you have a massively disjointed market between various deliver markets (look at NY Henry Hub vs Dutch TTF), and also a massively disjointed market between delivery delivery dates (natgas calendar spread trades has been nicknamed “widowmakers”)