Space and Gravity: We understand intangible values like price or worth using spatial and physical metaphors: high or low, rising or falling. Although intangible value has no physical properties, we mentally map it onto ideas of space and gravity. For instance, we imagine a lowest point for value, equating a price drop with a sharp fall and a rise with a slow climb, as if gravity is at work. This illustrates that our thinking applies the rules of space and gravity to even the most abstract concepts. - 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"