For instance, the UI finds that a certain card is in the graveyard. It is essential that the UI sub-system does not care why the card is there, or how it got there. It is entirely a dumb client.
Rails Long Term Support
Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)
Prevents you from data breaches and liability risks