As Atul Gawande says in his book, The Checklist Manifesto our lives have become too complex for a single person to handle. On one hand, there is so much out there to read, understand and think out there, that one lifetime is definitely not sufficient. But we make honest effort to reduce, if not eliminate, our mistakes of ignorance. But on the other hand, we continue to make errors of ineptitude (mistakes we made because we don’t make proper use of what we know). Checklists are great way to reduce the errors of ineptitude. And 123-check hopes to help you reduce these errors in your walks of life.