Yet, while complexity is indeed important and a large part of our everyday lives, truthfully, we tend to opt for the simple. Think of an iPhone. One of its key attractions is that it is extremely easy and intuitive to use. Sure, the insides of the device are deeply complex and well beyond any deep understanding for many of us, but our experience of it is about that simplicity and ease to use.
In investing I have often talked about the idea of a single large-cap global ETF as an excellent way of creating wealth over time. This is the core of my investment approach. I then do add complexity by adding individual stocks in a core or satellite approach. But as I get older (and smarter?) I am moving more and more to ETFs and that single global ETF becomes an increasingly larger percentage of my overall portfolio.