You probably can't fit a large enough explosive in a cell phone battery compartment to reliably crash a plane by exploding it anywhere in the passenger cabin, though that seems like more of an airport security thing than a customs thing.

I remember getting a boarding pass from an airline that was only offered in their app or printed at the airport, no email/download image/PDF option. I didn't have to install their app, but I would have had to waste time at the airport otherwise. I removed it when I was done and left it a negative review.

The number I remember seeing was that on average, app users are seven times more profitable than web users. Sorry, no citation.

I suspect there's some selection bias in that regular/loyal users of a particular product or service are more likely to install the app, but it also affords the company greater access to send notifications and collect data. On the rare occasion that I install some random company's app for a specific benefit, I remove it when I'm done.

It's likely the harassers can be prosecuted for false imprisonment, a misdemeanor. It is illegal to use deadly force such as hitting people with cars to prevent/terminate a misdemeanor.

here’s not really anything of that nature for tech stuff

The Magnuson-Moss Warranty Act does not exclude tech stuff. The problem is that it's a lot harder to work on tech stuff without insider information than 1970s cars.

He can't. He's paralyzed and his exoskeleton is broken.

On a more serious note, the 404media article (login wall) reports the problem was that the wristwatch controller for the exoskeleton had its battery wire's solder joint break. They seem to be trying to frame it as a right to repair issue, but that's a trivial repair for anyone with basic electronics experience.

If I feel threatened in my car, I am not allowed to run over the person

You are not allowed to run people over merely because you feel threatened.

You are allowed to use deadly force, in the USA when you reasonably believe that it is necessary to prevent someone from unlawfully killing, causing serious physical injury, or committing a short list of violent felonies. The harassment described in the article probably does not rise to that level, though an ambitious lawyer might try to describe intentionally causing the car to stop as carjacking or kidnapping.

PRNGs aren't random at all; they produce a deterministic sequence of numbers based on a seed value and an internal counter. Two PRNGs using the same algorithm and seed will produce the same sequence of numbers. The sequence is difficult to predict without knowing the algorithm and seed, and the values are close to evenly-distributed, which is enough like random numbers for a lot of use cases.

Here's an example in Ruby:

seed = Random.new_seed()
=> 142757148148443078663499575299582907518
prng_1 = Random.new(seed=seed)
prng_1.rand()
=> 0.6702742156250219
prng_2 = Random.new(seed=seed)
prng_2.rand()
=> 0.6702742156250219
prng_1.rand()
=> 0.9667236181962573
prng_2.rand()
=> 0.9667236181962573

If you run this yourself using 142757148148443078663499575299582907518 as the seed, your first two pseudorandom numbers will also be 0.6702742156250219 and 0.9667236181962573, assuming your version of Ruby hasn't changed its PRNG.

typically portraits are taken with 50mm lenses

While photographers use a variety of focal lengths for portraits, the focal length that's most associated with portrait photography is 85mm. This article from lens review site Imaging Resource illustrates the point; most of the lenses are 85mm or equivalent (e.g. 42.5mm on m43 with a crop factor of 2 making the field of view equivalent to 85mm).

Only certain mirrorless lenses ate compatible with teleconverters, and that one isn't. Teleconverters are also surprisingly expensive. RF mount is also expensive because Canon banned third party lenses entirely until recently and continues to heavily restrict them.

I think the the least amount of BS from a major camera company is probably Panasonic:

• Panasonic uses two lens mounts (micro four thirds and L-mount), both of which are shared with other body and lens manufacturers
• Old bodies get firmware updates
• Features are rarely artificially restricted for market segmentation
• Third parties have written apps to talk to Panasonic cameras

The biggest downside to the brand is that until very recently, Panasonic bodies had only contrast-detection autofocus, which can pulse if used in video and doesn't track moving subjects very well.

I'm disappointed in Sofirn for not making the battery in their bike light field-replaceable without tools. They're a real flashlight company. They know how to do this.