Except that a bank could give you your money when you ask for it every day over and over again until one day it doesn't. Being repetitive doesn't make something trustless. 

I would say it means you observe and verify things directly, without trusting a third party. 

For example I have observed and verified that the @Victory account is a massive troll. 

sudonaka

Daily discussion thread

saloon

Trustlessness is just being repetitive. Doing the same thing over and over again and eventually it becomes trustless. For example the sun is trustless. It rises every day. Thats all.