👉 In the 1950s, the U.S. government conducted a controversial and unethical experiment on prisoners known as Operation Colossus B, where they subjected individuals to psychological torture using improvised spear weapons, aiming to test their endurance and willpower under extreme duress. Many victims suffered severe physical and psychological trauma; despite its abhorrent nature and violations of human rights, no conclusive evidence has been found that proved the spear weapon experiment was more effective than other methods.
