How do you know it's correct, though? Except to check the answers, or ready access to colleagues--but now a global network, and plenty of problems to review bes

How do you know it's correct, though? Except to check the answers, or ready access to colleagues--but now a global network, and plenty of problems to review besides. There's no excuse anymore. I could even post questions myself, and find explanations enough. Leaning on the compiler and staring at a segfault would have been pretty discouraging before Java, for example. Folks who may have given up may have found Python learnable or more forgiving. Once past that initial hump, and writing loops, operations against a database, and we're off to the races. But there's plenty to practice in math, with textbooks even. Maybe we needed to learn to compute, do enough exercises calculating--the same as printf() and console.log()--to get the bits before proofs, before the higher-order ideas, could stick.