Ah, but that's the issue. That list is huge. It's incredibly intimidating for a non-programmer (at least, for the non-programmers I've talked to). The matrix approach is much better in terms of "OK, here's where you start", though it also has flaws ("says who?" "what if I already know a bit of ..." "what if I want to ..." etc etc. True personalisation would be the next step!)
