pretty crazy 

 Bonkers.

Seems so ridiculous once you've understood PKC. 

 Never thought about this 😬😬 

 And your social security number is the private key to yourself, according to the US, and it hardly has any entropy! 

 Kinda. But you can grovel before your custodian if someone sweeps you and they will waive the debt. 

 Yup, it’s a multisig setup where we only have 1 of an unknown amount of keys. 

 Damn, never thought of it this way 

 The exception is tap to pay, that basically works using a signature at the point of payment 

 Mind blown, thank you.