There have been many articles lately about how SpaceX fuels their rockets, and how it will apply when they start launching people. Traditionally, fueling is completed first, then people board the rocket. This way, people aren't stuck inside the spaceship in case a bad accident happens during fueling, as happened to the last (cargo-only) Falcon 9. SpaceX, however, fuels the rockets as close to launch as possible. This is because they super-cool the fuel, and want to leave as little time as possible for the fuel to boil off before launch. SpaceX plans to have people board the spaceship before fueling the rocket because of this. There have been many, many articles written about NASA not liking this plan. But I believe that SpaceX's plan is actually safer. The people board the rocket when the rocket contains no fuel. There's no arguing that this step is safer than boarding the rocket while it is already full of fuel. In addition, there will be support personnel to help astronauts board the rocket, and those people are also placed in danger. So this first part of the process is safer for both the astronauts and the support personnel than the traditional process. SpaceX then fuels the rocket after the people have boarded. This part is inherently more dangerous, but at least at this point the danger is only to the astronauts - no support personnel are in danger. So it does put fewer people at risk. In addition, I believe this risk is offset by having the people on a Dragon spacecraft - a spacecraft with the ability to perform a powered abort. If an anomaly is detected (such as the "fast fire" that took out the last rocket), the Dragon can launch away from the rest of the rocket, saving the crew and cargo. I think in the end that SpaceX's proposed process will prove to be safer than the traditional boarding process.