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Those devices may have some future use, but, as of now, they're pretty basic.

If a type of computer were to lead to "world peace", why wasn't it what we've had already for decades, which are a lot more powerful, like the laptops and desktops and mainframes and supercomputers.

However, it's not the hardware/software computer that will lead to world peace. The only "computer" that will lead to world peace, is the one we're all born with inside our heads.