It depends how rationally the market responds, I guess.
A reorg attack and a DoS are equivalent in my mind - anyone who's capable of pulling off a lengthy DoS is also capable of performing a reorg attack, whether they actually do or not is kind of irrelevant.
In the general case I don't think that majority miner attacks can be defended against without changing the hash algorithm.
Specific cases like "empty blocks" could be addressed via a hard fork.
But there's nothing stopping miners from faking transactions in blocks, sending amounts to themselves, filling the block with OP_RETURNs, or just doing the minimum possible to get around your "fix".
PoW absolutely relies on >50% of miners being honest, always has done.
Potentially - but I think that part of the author's point is that this shouldn't be necessary. Binning an entire keyboard for the sake of a few keys breaking?
We're almost at 100 days since it was last legal for me to interact with another person in my own home - https://esotericnonsense.com for references.
The UK will have vaccinated at least 20 million of the most vulnerable on March 1, providing a high level of protection three weeks later.
From then, the virus becomes simply less relevant than our collective mental health.
Mourning together is better than just being in solitary confinement forever; it's a 100% chance of a mental illness vs. a ~1-5% chance of a physical illness.
March 23, one year since the beginning of restrictions in the UK, I'm done.
Social distancing indefinitely (until Autumn? 2022? 2023? ...) is something other people can do.
If we had paid 1000 GBP per vaccine in the UK, I struggle to see how it would have not been the greatest value for money purchase that will have been made within my entire lifetime.
We're in the middle of a three month period of it being illegal for anyone to visit my home...
Taking a top-level view though, we've pulled about a billion different levers.
In the UK we've restricted the activity of healthy individuals for about 11 months now - the latest episode being an approximately 3 month period within which it's illegal to meet anyone else within your own home.
Psychological trials, even trivial things like filling in surveys or taking reaction speed tests are carefully monitored for ethical concerns, lockdown we just went all in on with no cost-benefit analysis.
It seems bizarre to me that in that context we should be worrying about the ethics of a challenge study with a few hundred or few thousand volunteers.
Loads of people I know have _already_ volunteered themselves for it in the outside world with no compensation and with no benefit to science because they're not able to mentally handle indefinite restrictions.
A reorg attack and a DoS are equivalent in my mind - anyone who's capable of pulling off a lengthy DoS is also capable of performing a reorg attack, whether they actually do or not is kind of irrelevant.