Ключевые слова: again, attempt, attempts, back, backward, better, change, concept, conclusion, confirm, correct, course, decision, delay, deviation, efficiency, entails, fail, failed, final, find, get off, go, inviolability, matter, mistakes, new, no, option, past, problem, progress, redo, repeat, return, root, shortcuts, social, solution, something, source, success, time, try, trying, unsolvable, unsuccessful, way, yourself,