Prior to going to the moon, a computer took up an entire room. In order to land on the moon, a computer had to fit inside the cockpit of a rocket. In the end, they got it to fit inside a one square foot box.
If the goal was to make a small computer, I don’t think computers would have developed as fast as they did. But, the goal was beat Russia to put a man on the moon. Americans were scared of Russia having better technology and more power than the United States. As a result, the mission had purpose.
Now we have computers in our pockets that are more powerful than my first laptop.
Some of the best advancements, ideas, and achievements are the byproducts of working towards a goal.
So, pick a goal and work relentlessly towards it, and be sure to pay attention to the byproducts.