Understanding the difference between private and public keys is not the whole story. Users need to know about backing these up, but they also need to know how t

Understanding the difference between private and public keys is not the whole story. Users need to know about backing these up, but they also need to know how to clear them off of their computer in the first place. You can go as far as having your private key carved into a metal plate so it'll never get destroyed, but if a copy of it happens to still be sitting on your hard drive, your coins are still at risk. Very few people will know how to securely purge their computer of this critical data. Even worse, the 'offline' approach in this guide means downloading random javascript from different web services that you are just meant to trust with your private key. It's a disaster.