“Kevin O’Leary’s Legacy” is part of the Legacy Series. It comprises a personalized version of: “ The Concise Training Manual Nemonik Thinking (Schade, 2024)”. The aim is obtaining Mr. O’Leary’s financial and organizational support for the Manhattan-2045 Project. Manhattan-2045 is a billion-dollar project aiming to protect your life, loved ones, and wealth. The first Manhattan project produced the atomic bomb in 1945. The annihilations of Hiroshima and Nagasaki show that people will use that inhumane weapon. The threat of a global nuclear war is rapidly increasing. Nine countries possess more than 12,000 nuclear warheads. North Korea has shown that proliferation is unavoidable. Russia and Israel have already threatened to use nuclear force in local conflicts. Once started, computerized defences guarantee that the dominos will keep falling until our entire civilization is annihilated. The Secretary-General of the UN, António Guterres, has warned us that 2050 is the year of no-return for climate change. Since Kyoto, geopolitics have inhibited effective climate action. As a result, humanity wasted 50% of the rescue time. That ineffectiveness will turn global-prevention into national-protection. Hence, whether climate change is real or not, the competition for dwindling resources is likely to trigger a global nuclear war before 2050. Manmade-extinction-problems, such as climate change and nuclear war, are irrefutable evidence for humanity’s systemic-mental-failure. Our thinking fails, because the human brain is an organic supercomputer that lacks a conscious operating system. Albert Einstein pointed out that we cannot solve our problems with the same way of thinking that creates them. The new paradigm is nemonik-thinking. Nemonik-thinking is a Brain-Operating-System that instructs the brain how to think. Nemonik-thinking is for the brain, what ‘Windows’ is for the computer. It will make people the best thinkers they can be. The Romans used the centurion system. Their success confirms that one centurion is able to lead one hundred people. In 2050, the global population will be about 10 billion people. Using the Roman ratio—Manhattan-2045 has to train at least 100 million nemonik thinkers before 2045. Hence, this is a billion-dollar project worth your time and effort. You and your loved ones are trapped on the sinking Titanic. There is no place to hide. To escape that harsh reality, the passengers are entertained by musicians on the aft-deck. Some try to jump ship, while others climb the mast. In contrast, Manhattan-2045 will keep the Titanic afloat. Therefore, I invite Mr. O’Leary to join this vital project.