The other, the "speculative element, " is driven by sentiment and emotion: hope and greed and thrill-seeking in bull markets, fear and regret and revulsion in bear markets.
Driven by Lumus' patented Light-guide Optical Element, a micro-display pod, and the Optical Engine which projects light into the lens -- where it is reflected back to the user's eye via reflectors embedded in the lens -- the Lumus' DK-32 delivers a bright 720p 3D-capable display that only weighs 27 grams.
The narrative he builds is one that compels us to become more comfortable with math and statistics, one that suggests we should take advantage of machines where possible, and one in which we cannot lose the human element guiding the analysis if we want to avoid catastrophic chaos-theory driven failures to which machines are susceptible.
While this inevitably introduces an element of human judgment to the investment process, Dalio insists it is still driven by the rules-based framework he has built up over thirty years.