Answer:
The primary difference between a blockchain and a database is centralization. While all records secured on a database are centralized, each participant on a blockchain has a secured copy of all records and all changes so each user can view the provenance of the data.
I believe it is called closed mindset. Closed mindset is when you fail to see other ways to your error and don't accept help or think you can improve.
Answer:
texting? it happens in real time and is online.
