A purely selfish request, I know, but may I ask why? :)
The consequence is a lot of people that know nothing beyond basic algorithms and data structures who try to code their own geographical databases using arrays/linked lists and wonder why queries like find the nearest neighbor to X and find all objects within this shape take forever. The answer is, they used the wrong data structures. But convincing them of that is like pulling teeth. Also, according to several of them, C = C++, and every language gets compiled to C so why would you use anything else...
Whether or not that's true is another discussion, but that's the point he's making.
I have a degree in CS & Math, so I'm guessing I'm good to go :)