The Uncertainty Principle was thought by the German physicist Werner Heisenberg in 1927. The principle or indeterminacy principle states the position and the velocity of an object can't both be measured exactly at the same time. On the one hand, it's easy to measure both the position and the velocity of a car. On the other hand, particles such as photons and electrons are small in mass the uncertainties become significant. The position of a particle is determined and the velocity is less precise. The velocity of a particle is determined and the position is less precise.
The website Caltech What Is the Uncertainty Principle and Why Is It Important? explained the principle using a moving roller coaster: The rollercoaster . . . serves as an analogy for how the uncertainty principle works at scales much smaller than this. When the rollercoaster car reaches the peak of the hill [or the top of a climb], we could take a snapshot and know its location. But the snapshot alone would not give us enough information about its speed. As the rollercoaster car descends the hill, we can measure its speed over time but would be less certain about its position. The uncertainty principle is a trade-off between two complementary variables, such as position and speed.
I disregard the science version of Heisenberg Uncertainty Principle for today's blog. I apply a common knowledge version. The uncertainty principle is nothing is 100% known. Nothing is 100% certain. Nothing is 100% definite.
I remember a classmate I met in Math 30 Calculus I when I attended San Jose State University (SJSU). The classmate and I took two more classes together Computer Science 46A Programming I and Math 32 Calculus III. He was a former US Marine attending SJSU under the GI Bill. I believe he was trained in computer programming while enlisted. He knew calculus and programming before attending classes.
I connect the uncertainty principle and my classmate's attitude when taking exams. My classmate answers "no" every time I ask him if he's ready for the exam. He was never ready. He was never prepared. He might have forgotten a chapter. He could experience a brain freeze. The professor could change anything on exam day. There was always an unknown.
The uncertainty principle applies to anything and anytime in life. There are limits in preparation. Tomorrow is unknown. The future is unknown. It's common knowledge. It's common wisdom. Life may not be finite; however, there are boundaries.
Update On A Past Blog
I thought about a ma and pa store called D&J Hobby And Crafts Store which was like Fry's Electronics which opened in 1971 and closed in 2011. The store name was shorten to D&J Hobby when the founding owner's son choose to reopen the store at a different location in 2013. D&J Hobby was a store selling crafts, radio controlled cars and airplanes, dolls, books, board games, models, robotics, arts, sewing, jewelry, woodworking, toy trains, and much more hobby and crafts supplies. The store was known for always in-stock inventory and knowledgeable staff.
Unfortunately, the store closed in 2015 due to competition and bad luck. The store couldn't compete with online stores and big box retailers. The store was robbed multiple times. Insurance was too expensive due to higher deductibles. Rent was too expensive.
I remember the last time I shopped at D&J Hobby And Crafts Store. I purchased a bottle of red paint for an anime cosplay accessory. The store was dead. No customers. Empty shelves. It was like the final days of Fry's Electronics before it went out of business. In contrast, before online stores, D&J Hobby And Crafts Store was the Fry's Electronics for hobbies and crafts. The store was loud. The store was busy. Employees helped customers. There were lines at multiple departments waiting for employees to help them or pay their goods. Shelves were stocked with everything.
I never shopped at D&J Hobby.
There were few memories at D&J Hobby And Crafts Store. I purchased paint for figurines, paint for die-cast cars, role playing game books, and dice. I browsed the store one random day to browse their board games at a year I forgot. Store was dead. On the other hand, there were many memories at Fry's Electronics. I shared the top memories in the blog Top Ten Plus Four Equals Fourteen Fry's Electronics Moments written on Feb 25, 2021.
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