Since air is an essential element for survival, its value is infinitely high; however, because it can be obtained anywhere, its price is effectively zero. Nevertheless, pure 100% oxygen is rare and can have a price. The distinction between value and price is important, but many people don’t understand how they differ. Exclusivity of supply is necessary to assign a price to something’s value. Exclusivity means only you can supply it, and people can only buy from you. Time also makes exclusivity. That is the message that you cannot buy it without now. Universality creates value, and scarcity creates price, thereby placing a value on that value. But these two contradict each other. Wealth is always built on contradictions. That’s why business and investment can be so challenging. - Joseph’s “just my thoughts”
For the security of the Internet service, we have been asked by the Internet service companies to set the password combined by more than 8 or 10 "uppercase letter+lowercase letter+number+special character". But it was obviously of no use. This security guideline was recommended by Bill Burr who worked at NIST in the USA, he suggested this way in his report. Furthermore, the user was required to change the initial password set regularly. Despite this measure, the best way of security to protect users' accounts was the notification of the alarm for attempted hacking when the hacker tried. We have only tried to change the keys despite the simple method meanwhile. Today, the world has begun to comprehend that the security problem is not encryption or confidentiality, but simply cyber-dominion control and communication. - Joseph's "just my thoughts"