Airbus A380 is on its way across the Atlantic. It flies consistently at 800 km/h at 30,000 ft, when suddenly a Mach-2 Eurofighter Typhoon appears. The fighter jet pilot slows down, flies alongside the Airbus and greets the passenger plane pilot by radio, 'Airbus, boring flight isn't it? Now have a look here!'
He rolls his jet on its back, accelerates, breaks through the sound barrier, rises rapidly to a dizzying height, and then swoops down almost to sea level in a breathtaking dive. He loops back next to the Airbus and asks, 'Well, how was that?'
The Airbus pilot answers, 'Very impressive, but watch this!' The jet pilot watches the Airbus. Nothing happens. It continues to fly straight, at the same speed. After 15 mins, the Airbus pilot radios, 'Well, how was that?'
Confused, the jet pilot asks, 'What did you do?'
The Airbus pilot laughs and says, 'I got up, stretched my legs, walked to the back of the aircraft to use the washroom, then got a cup of coffee and chocolate pastry.'
Educational
A science graduate asks, 'Why does it work?' The engineering graduate asks, 'How does it work?' The BCom graduate asks, 'How much will it cost?' The arts graduate asks, 'Do you want fries with that?'