> we can now imagine a world where we cure all diseases Sure we can imagine it. However to make it happen, it's not enough to imagine the end goal, you need to

> we can now imagine a world where we cure all diseases Sure we can imagine it. However to make it happen, it's not enough to imagine the end goal, you need to understand and execute every single step. I suspect his lack of knowledge about what's actually involved allows him to imagine it. ie I notice he hasn't declared a world free of software bugs and failures ( a much easier task ), before declaring a world free of bugs in human biology.