UI is the point when interactions between machines and people happen. It lays down the parameters of a user's interaction with a machine.
Accountability
Accountability is the need or willingness to take ownership of one's actions. When someone takes ownership, they are committing to producing successful outcomes.
The term falling knife (also known as "Catching a Falling Knife" or "Catching the Bottoms") refers to the action of buying an asset which is rapidly declining in price.