If you do things yourself, there is a downside to doing it all the time

1. Is that the things you do tend to be smaller
2. A bit trivial
3. It’s not trivial, but that what you do is often learned in a big way
4. And if you want to make great progress in a field
5. You need to have enough in-depth knowledge of a field before you can innovate
6. To be honest, your armored vehicle is interesting
7. Take a look at Dyson. In order to make a vacuum cleaner, he worked on more than 500 prototypes and worked hard for more than 5 years.
8. Depth, brother
9. how should I do it?
10. Go to class, listen to the teacher, form your own circle, create more value