Let me be clear; we should move away from Manufacturers SUGGESTED Retail price and go towards Manufacturers Retail Price. Just make it that the price is the price, and then the dealers can become glorified delivery centers/showrooms and service centers.
They'll make tons of gross profit because their cost infrastructure will go down, and OEMs will be happy because they still won't have to deal with customers and can focus on wholesaling cars to their "dealer" network.
The rub is in the finance and insurance products. OEMs all have captive lending arms, and currently dealers make a ton of money ($1,500+ per vehicle retailed) in finance and insurance profit. Navigating that relationship will be interesting as OEMs take on more control of the sales process.
You define variables and code that changes the variables over time. TLA+ lets you observe variable states and assert constraints. The amount of concurrency is up to you, it works fine with a single process.
Non-determinism might be a better thing to anchor the value to. For example in a deterministic "normal" programming environment, an if/then/else statement will execute only one out of two possible code paths. You have to run the code with a complementary condition to observe the other code path.
In a non-deterministic environment like TLA+ both possible code paths are executed. You can observe state transitions in both possibilities.
In a deterministic context the combinatorics of code paths can get out of hand quickly. Non-deterministically you have one set of assertions for all code paths, or patterns of paths.
The explanation in the article is reassuring and all that, but even still RH was allowing $700k+ margin on a $16k account. Maybe they feel the risk is low for covered-options writing-- and justifiably.
However, last I checked (some time ago) a purely cash account would have required literally $700k+ to execute this trade. Because, you know, stuff happens.
The vast, vast majority of them are ethnic Chinese.
The thing to realise is that this is really a divide and conquer game by the West.
The West has always recognised that Taiwan is a part of China. Not least of course when the recognised government of China was the ROC government.
Now the West recognises the PRC as the government of China, but this means that trying to stroke an 'independentist' sentiment in Taiwan becomes a tactic to weaken them.
America, for one, recognizes Taiwan as an independent country ("province") and has enough weight that they can do that. Other countries, especially those in Europe, are not big enough to be able to do so and still maintain a trade relationship with China, and default to the choice that makes economical sense.