Major challenges exist. They are formidable, unambiguous, and obvious. The consciousness mobilizes quickly against them.
There are also challenges of a diffuse kind. Some diseases are like this… For example, multiple sclerosis. These challenges are like dots on a certain board: one square has one figure, and another square has a different one. The squares are ambiguous, and so are the pieces… and all you need is for a certain composition to take shape. The very moment when that composition finally takes shape, you die. But before the composition takes shape, nothing happens. That is the danger.