Cities that want to keep cars out of bike lanes should keep all cars out of them, autonomous or not, by ticketing them. But they don't, so taxis and delivery drivers stop in them. That's traffic enforcement's fault.
Given that human drivers stop in bike lanes, Waymo then has a tradeoff:
1 Be the only ones to follow the letter of the law, break a lot of people's expectations, and catch backlash for disrupting traffic.
2 Follow the most common expectation, even if wrong, and incrementally add to the problem.
IMO, cyclists shouldn't lobby Waymo directly, but should lobby cities to actually enforce the rules on everyone. Then Waymo would fall in line naturally. And if they're inclined to take direct action against Waymo's they should also act against Uber and DoorDash drivers who are a far bigger problem by volume (and wait time for deliveries).
Not really, they don't slow down your metabolism. You're doing a cardiovascular stress event when you go into the sauna, and when you get out of the sauna, your body is not stressed. It's like going to the gym just for your heart. So as your heart gets stronger it doesn't need to work as much to do its job. But your metabolism isn't down regulated in this event.
Like who has a better metabolism, and is fatter? The guy who goes to the gym everyday and runs 20 km? Or the guy who never runs, and when he walks to the corner store he's sweating and huffing and puffing?
Cows eat grass. Humans use more calories digesting grass than they gain from eating grass, so cows are infinitely more efficient than humans at gaining calories from grass.
And there are places in the world where growing human food would destroy the land. Semi-deserts like Texas and Montana. Grazing cattle there is a good idea. Bison would be even better because the native prairie there is adapted to bison, but cattle are a close substitute.
Since humans store fat, one could see mechanistically we are setup to run on the energy we store: fat
When humans go more then 4 hours without eating glucose (skipping a meal, keto, fasting, or sleeping) they are running on fat, including the brain. If you want to prevent your brain from using fat you need to drip feed glucose all day (which some people try really hard to do), but when you sleep some of that fat will finally get to be used by the brain. One could reasonably argue the default energy of the human body is fat, hence why it's used during sleep.
Both short-term PET and arterio-venous difference studies in humans show that brain glucose consumption decreases as ketone availability to the brain increases. These results suggest that ketones are actually the preferred energy substrate for the brain because they enter the brain in proportion to their plasma concentration irrespective of glucose availability; if the energy needs of the brain are being increasingly met by ketones, glucose uptake decreases accordingly. This decrease in brain glucose uptake when both ketones and glucose are available supports the notion that ketones are the brain’s preferred fuel.
The body will use glucose when available, because glucose is so damaging to cells - glycation happens rapidly. As soon as any glucose elevations are seen in the blood stream insulin is immediately released to push glucose into fat cells and get blood glucose levels back to the low normal.
However, I'm open to being wrong: Why 'ought' the brain use glucose instead of fat?
I'm not talking about your weight, I'm talking about the fuel source for the brain. The body runs on fat, the brain runs on fat. It can, when available, also use glucose - but the entire metabolic system tries to keep glucose levels low and consistent rather then spiked and high.
Turns into blood glucose, which the body can use in the brain, but works as hard as it possibly can to put into fat cells. The brain also runs perfectly well on fat, humans store fat not glucose for long term energy.
That's why I use self sealing stem bolts