1,493 karma · joined July 12, 2022
The difference between London and the US is that the bars are of different size (12.5 vs 1kg).
This is how freedom of movement works, yes, and it's a key reason why our country is so rich.
The main trick behind randomized control trials is that you can disregard factors like this because these effects would be randomly distributed as well.
Edit: Actually I checked this again and apparently the advice has now changed to the inverse.
Is it the following:
Issuer revokes the wallet of Alice and then publicly says “This ID is Alice btw” and then verifiers can check their lists to see whether any of their received signatures are revoked (in which case they must be Alice)
If I lose my passport I am obliged to call the police so that they revoke it, if I lose my phone with my digital ID on it they also need to be able to revoke that ID.