When I say "tunnel vision" though I mean the fact that novice users don't entirely understand what code does or how it works. They're only understanding the very surface of what they're doing and without more fundamental knowledge they'll fail to understand when a different approach is better suited, or why certain things are avoided, or why their tool is not the best tool for what they're trying to accomplish (square block in circular hole type issues).
Sure its a good start just "diving right in" but its also a great way to get bad habits. The good coders, ones that have the natural talent, will figure things out regardless of their starting block. The problem is the swarms of bad programmers that come out of the wood works because "anyone can do it!"
How would I improve it? Don't gloss over the details as if they're entirely that simple. Programmers need to start simple (a calculator) and then build up iteratively so they're not overstepping their bounds. Thoughts?