If the Kâ¬ level is changed from 1 to 2. called the Taguchi method or Taguchi quality engineering in the United States and other countries. the coefï¬cient is expected to decrease to zero. we cannot lower the quadratic termâs coefï¬cient.
Today, that single bitcoin is worth upwards of  $2,200. Monday marked the seventh anniversary of what is said to be the first recorded instance of bitcoin used in a real world transaction. Over the course of seven years, bitcoin's value has multiplied 879,999 times over since 2010.
The reason: Bitcoin's overall market value, when compared with stocks, bonds and gold, is so tiny that a total collapse wouldn't cause major harm to the economy or financial system. Bitcoin's current market value is $179.5 billion, according to coinmarketcap.com. That's far lower than the U.S. stock market's value of nearly $28 trillion, the U.S. government bond market at roughly $20 trillion, or gold, with its estimated value of $7 trillion.