The obstacle of going to Mars has long since been a problem of desire and not technology. Obviously better radiation shielding, drugs that reduce the negative e

The obstacle of going to Mars has long since been a problem of desire and not technology. Obviously better radiation shielding, drugs that reduce the negative effects of zero-g, nuclear propulsion, and other technologies would reduce the risk of failure but at the end of the day going to Mars is a massive engineering and logistics problem. A good analogy (I think) would be the construction of the Great Pyramid of Giza. Sure it is trivial to build today with our technology, as (I hope) it will be trivial to travel to Mars in the distant future, but the reason its a great wonder of the world is because, despite a lack of modern technology, it was built as a national engineering project that spanned decades. Just like a mission to Mars, it was a daunting task (one that required a generation or two of slaves perhaps) that was pulled off through pure grit.