I have had numerous hobbies in my 78 years. I recently reflected on one of these (aviation). In just 40 years aviation was greatly transformed in this short period of time:
In 1903, the Wright Brothers flew a powered airplane an incredible 120 feet.
Forty years later in 1943, the pressurized Boeing B-29 bomber could fly 5,591 miles without refueling.
In just 40 years !