Just force 3d secure, as it shifts the liability to the customer's bank. Most people don't mind opening their banking app on the phone for confirming the transaction if they really want the product for itseprice.
if customer fraudulently claims to their bank that they haven’t received the product, the bank files a chargeback and 3DS does not protect the merchant against it.
You raise a good point: There's nothing intrinsically good about betting and trading venues, and the sane default option might well be to prohibit it. We allow stock and bond trading as it fulfils important functions [1].
What you describe (profiting from creating havoc by some "short" bet) is indeed problematic and is regulated.
This is also one more reason why trading should not be unconditionally anonymous. Another reason: proper trading venues have rules against "squeezing", namely that no entity may hold more than some threshold ratio of the open interest. That's obviously impossible to enforce with anonymous markets.
[1] Tradings allows individuals to time-shift consumption, it funds productive enterprises, it incentivises convergence of market price with fundamental value, which in turn is what enables efficient investment allocation, and it allows the emergence of an economy-wide equilibrium of savings and investments. Note though that all of these functions might well be fulfilled by having, say, one minute of trading a day.
Or maybe we should somewhat regulate the stock market, require identification of traders, have a regulatory body that can retroactively investigate suspicious trade patterns and determine the identity of who's behind them?
At least the stock market is supposed to have a purpose besides gambling, to raise investment for companies. (Whether it's actually successful at that is a separate matter.) And anyways, your scenario would probably be considered insider trading, and that's already banned.
You're not that wrong - look at e.g. Tesla. Back in the day, the point of the stock market was not to make money off stock price changes, but to make money of the dividends, which was much more stable (but has a different set of issues associated with it)
That's not SMTP or other industry standard protocol, incompatible with any mail client out there (?) -- it's for sending mail from backend services, not using as personal email.
Even if you make it work with some SMTP adapter, you still need external mail server as on reception side Cloudflare don't provide storage/IMAP service, only route/redirect mail.
I use it (routing to Gmail, Mailgun SMTP for sending) and it works. But it's not really a mail service if it depends on some another mail service to work.
In space you get bit flips fairly quickly when using very small transistors. You would have to run stuff on fairly old hardware, which probably makes the whole thing economically inefficient for serious "computation in space".
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