Testing can only prove the presence of bugs, not their absence. – - Edsger W. Dijkstra

The required techniques of effective reasoning are pretty formal, but as long as programming is done by people that don't master them, the software crisis will remain with us and will be considered an incurable disease. And you know what incurable diseases do: they invite the quacks and charlatans in, who in this case take the form of Software Engineering gurus.

Probably I am very naive, but I also think I prefer to remain so, at least for the time being and perhaps for the rest of my life.

If you want more effective programmers, you will discover that they should not waste their time debugging, they should not introduce the bugs to start with.