Karma is 'denser' than during other more harmonious times that many of us crave. If you want to refine your mind, you can do it in a much quicker way, as mentioned in the article, due to to the seeming 'chaos' that makes things move faster than is sometimes considered sane. The real question is how would you like to spiritually profit in general? Maybe I'd be able to answer based off what your goals are.