On some air bases the Air Force is on one side of the field and civilian aircraft use the other side of the field, with the control tower in the middle. One day the tower received a call from an aircraft asking, "What time is it?"
The tower responded, "Who is calling?"
The aircraft replied, "What difference does it make?"
The tower replied, "It makes a lot of difference. If it is an American Airlines Flight, it is 3 o'clock... If it is an Air Force, it is 1500 hours... If it is a Navy aircraft, it is 6 bells... If it is an Army aircraft, the big hand is on the 12 and the little hand is on the 3... and if it is a Marine Corps aircraft, it's Thursday afternoon."
There is a Rookie Pilot and CoPilot and they are coming in for a landing, the Pilot says, "Damn that runway is small give me 1/4 flaps".
As they get closer the Pilot says, "Damn that's a small runway, give me 1/2 flaps."
As they're coming in closer the Pilot again says, "Damn that's a small Runway Give me Full Flaps."
After they land the Plane safely the Pilot says, "That's the smallest runway I've ever landed on."
Then the CoPilot says, "Yes it is, but look it how wide it is."
A hypothetical situation where 20 CEO's board an airplane and are told that the flight that they are about to take is the first-ever to feature Pilot less technology: It is an un-crewed aircraft.
Each one of the CEO's is then told, privately, that their company's software is Aircraft's automatic pilot system. Nineteen of the CEO's promptly leave the aircraft, each offering a different type of excuse.
One CEO alone remains on board the jet, seeming very calm indeed, asked why he is so confident in this first un-crewed flight, he replies "If it is the same software that runs my company's IT systems, this plane won't even take off."
This is Confidence!