In this talk, Uncle Bob describes the three laws of Test Driven Development, and demonstrates the discipline using the Kotlin language.

Why is it that some people seem to be hugely successful and do so much, while the vast majority of us struggle to tread water?

The answer is complicated and likely multifaceted.

One aspect is mindset—specifically, the difference between amateurs and professionals.

Most of us are just amateurs.

What’s the difference? Actually, there are many differences