This project is completely ridiculous. Those people completely underestimate how extremely difficult it is to even land on Mars. Nearly two-thirds of all Mars missions have failed in some way, and yet these people are convinced they can simply put humans on Mars? Right.

You don't have to take my word for it, though. Take a look at what they say at their own site, and see if it actually makes sense. A few examples:

"In addition to this, the elements needed for a viable living system are already present on Mars, so we can keep the number of launches down. For example, the location Mars One has chosen contains water ice in the ground which can be extracted through heat and used to drink, bathe with, or used to feed crops, but can also be manipulated to create oxygen. Mars even has natural sources of nitrogen, another element of the air we breathe."

And we will extract these resources how? We theoretically know how to build such systems, but that's not the same as actually being able to build them on Mars. Are they just going to experiment during the project, and if it doesn't work then "oops, well, I guess you're all going to die"?

But, most ridiculously: "Of course most of the elements we need are not yet exactly in the form we would like, but crucially: no brand new inventions have to be conceived, designed, tested and built for the mission to become reality."

That's like saying we can also build a colony on Venus right now. Or Mercurius. Or Jupiter. Because we have a theoretical understanding of how to launch rockets there and how to build space colonies, and of course the technology to do both these things already exist. What these people fail to see is not that we don't have a theoretical understanding of how we might do all this, but that without any practical experiments in several areas AND many failed tests the chances of this project going perfectly as planned (which almost never happens to begin with) are VERY slim.

</rant>