There are two points I don't get with such a system.

1) The logic/functions needed in each "black box" still need to be written. How is that handled? Is that where the line of "programmer vs non-programmer" is crossed?

2) Programming is, more or less, the skill of breaking down a problem into the parts needed for its solution and providing the solution. The value of a programmer isn't the ability to type in code, so much as the ability to logically break down the problem and solve it. How would such a programming paradigm actually solve that problem?