In control theory, backstepping is a technique developed circa 1990 by Petar V. Kokotovic, and others for designing stabilizing controls for a special class of nonlinear dynamical systems. These systems are built from subsystems that radiate out from an irreducible subsystem that can be stabilized using some other method. Because of this recursive structure, the designer can start the design process at the known-stable system and “back out” new controllers that progressively stabilize each outer subsystem. The process terminates when the final external control is reached. Hence, this process is known as backstepping.
The hype and international drama surrounding the latest White House meeting between Trump and Zelenskyy has caused emotions of many people to boil. Including my own. Though naturally I cannot speak for others, I have within the past twenty-four hours come to a radical reversal of my initial thoughts. Oddly enough my change of opinion has been prompted by social media. I know that will immediately prompt its own adverse reaction; but that too has become a source of different opinion. Social media for all its many faults – not the least of which include the publicity of falsehoods and intentionally devious distractions – is the medium by which much of the population of many countries relates to one another. Given the mounting objections to so-called press coverage through all the standard vehicles such as CNN, MSNBC and FOX NEWS, it is questionable whether they improve on what is being fed to the public. What has captured my attention in particular with what I have heard on TikTok in the past twenty-four hours are videos of qualified people addressing, not political positions so much as historical accounts. Some of these accounts are favourable to the American position, others are not.
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