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Sir George Cayley was an English engineer that is thought to be the founder of aeronautics. He is credited with being the first person to understand the principles and forces that were required to discover flight.
Sir George Cayley discovered the principles of flight in his 84 year long life starting in 1773.
Practical relevance refers to the direct applicability or usefulness of a concept, theory, or research findings in real-world situations or the impact it can have on practical decision-making or problem-solving. It signifies the ability of information to be relevant and beneficial in addressing tangible issues or improving outcomes in practical settings.
you
You don't, unless you work in engineering. The Wikipedia article on "binomial theorem" has a section on "Applications".
when simplifying fractions
suck my balls
A real life demonstration is a practical application of something
Baseball and in building fences
The cast of Hamilton Life - 2012 includes: Linda Rourke as Herself - Host
Bethany Hamilton has lived in Kauai, Hawaii for her entire life
Carpentry