The B-52 was designed in a hotel room over one weekend
The first prototype of the B-52 may have been designed in a weekend.The B-52 of today was iteratively designed over decades and the current H models are entirely  different planes than earlier models (although structurally very close to the G model).Another HN commenter mentioned GPS being designed over a holiday. But we spent years and years in the military debugging GPS and making it functional.Claiming that something was designed in a day is good clickbait, but it completely discounts the years of blood, sweat, and tears it took to get to the product that people have in their head.