You're right. However, I must say that as a public school math teacher I chafe a little at the "inside public schools" comment, only because most of us inside really, really want to change, but it's mostly not inside factors stopping us, but outside influences (things like the math wars in the 1990s).
I have a colleague here who is a veteran top-notch math teacher who did his masters thesis on gender segregating his 5-7th grade math classes at a prestigious secular private school. Not only did the attitudes and engagement of the female student improve, but the male students also showed higher satisfaction and achievement.
The people who didn't like it? The parents. After the study concluded they couldn't keep doing it because parents fought to keep them from segregating the classrooms, facts be damned
I loved hypercard, and am sad that it is gone, especially as an educator. It's sad that most student's interaction with computers these days is web surfing, word and powerpoint. Some people have mentioned the failures of hypercard like software, and I don't think that's fair. When I tried supercard it felt like it was trying to clone hypercard... just as it was years ago, not accounting for advancements in the world.
Recent work and research seems to indicate that, no, it's not just an issue of thermodynamics through caloric content. Unfortunately, many of the top proponents and researchers are of the sensationalist and inflammatory type. (Like the UCSF dude who proclaims "Sugar is Poison!". 95% of the science and research is exactly correct, and very well done, but I just wish he would shut up because I think he hurts his own cause.)
Think of it this way-- you know what has lots of calories? Petrol. Will drinking hydrocarbons make you fat? So who cares if a burning doughnut changes water temperature the same amount as a crunchy shrimp roll (both around 500 kcal)? Eating each will have a different impact on metabolic reaction, and energy storage.
One thing complicating this is BRAC. There are F-16 wings that are maneuvering to try to get F-15s right now, even though the 15 is older and more difficult to maintain. What the 15 gives a wing is more flexibility. No one wants to be "air superiority and patrol" anymore since there isn't much need for that these days. And since 16s are limited in ground support capabilities, some people see the 15 as the only way to stay in business. Note that this isn't as much of a concern for the regular air force, who will mostly just shuffle people around, but has a massive effect on the air national guard.
So having a single jet that can do it all (ground attack, air attack, stealth, vtol, carrier, you name it) means that you won't be considered obsolete.
Robots, due to the initial investment, may not turn out to be as cost effective as imagined. When Toyota opened their first plant in Japan in the last 18 years, they went for low cost of building the factory, and fast manufacturing times instead of complex robotics to minimize wages/benefits.
In an age where things like company agility is valued, and start-up capital (including commercial lines of credit) is very limited, I'm not sure that robots are going to beat humans on price any time soon.
The air races have always been risky. Everyone knew that very well. Think about what would happen if every auto racing mishap resulted in sharp acceleration until collision with some other solid object. There have been crashes and deaths in the past, but this is really tragic as most mishaps happen far away from the grandstands.
It may be insensitive, but I'm actually most sad over losing another plane. For years there's been speculation that unlimited class racing's days were numbered. Not enough planes and parts, not enough pilots, not enough mechanics. But the unlimited class is what captures the imagination. Lefty in White Lightning, Hinton in the Red Baron, Tiger in Strega... I connected with the old warbirds and their pilots in ways that I kind of don't have words for right now.
I'm sad for the injured and dead, but I'm devastated over what feels like the end of an era.