Hockey ice is white because it's painted. Rinks freeze a thin base layer, spray it with white paint, then seal the paint under more ice. The league has done this since the 1940s so fans could follow a black puck. Then someone pointed a projector at it. It turns out hockey had accidentally built the best movie screen in sports. Matte white paint under a sheet of clear ice diffuses light almost perfectly, and the whole surface is dead flat. It's also enormous. An NHL rink is 200 feet by 85, about 17,000 square feet. A standard IMAX screen is around 4,000. A show like this takes roughly a dozen 20,000-lumen projectors hung in the rafters, aimed nearly straight down so the beams don't glare off the ice or bleed into the seats. Software warps and blends all of them into one picture that fits the rink's rounded corners pixel for pixel. The Devils put about $1 million into their rig a decade ago, and arenas across the league copied it. San Jose was always going to push this furthest. The Sharks have run the most famous entrance in hockey since the 90s, a 17-foot shark head lowered from the rafters with fog pouring out of its mouth and eyes glowing red. For thirty years the players skated out of the tank. Now the whole rink is the tank, and the sharks circling under their skates are just light bouncing off paint that was only ever there to make a puck visible.

New York bought a tunnel boring machine for roughly $8 million, used it once, and entombed it in concrete under Park Avenue. Digging it out would have cost $9 million. So they held a small ceremony, sealed the chamber, and walked away. That's the industry norm. When the Channel Tunnel was finished, machines on the British side were steered off the main line and buried under the seabed. One that made it out was auctioned on eBay for £39,999 and cut up for scrap. Boring machines get treated as single-use because retrieval requires a massive reception pit and cranes, which usually costs more than the machine itself. Which is why the quietly radical word in this update is "re-launch." Prufrock arrives on a truck, tilts down, and digs itself into the ground within 24 hours. No launch shaft. When the tunnel is done, it angles upward, breaks the surface, and mines its way onto a trailer that drives it to the next job. The Boring Company calls the maneuver porpoising. Prufrock-1 has already dug six tunnels this way. It's the SpaceX booster playbook underground. The biggest hidden cost in tunneling was throwing the machine away, so they built one that comes back. There's a second change buried in the design. Conventional soft-soil machines advance about 5 feet, stop, erect a concrete ring, then start again, so they spend roughly half their life not digging. Prufrock installs the liner while it mines. The company keeps a pet snail named Gary, because a garden snail tunnels 14 times faster than a conventional boring machine. Elon's stated definition of victory is beating the snail. Even at Prufrock's target of a mile per week, Gary still wins.