The post-WWII emergence of low-cost high-performance automobiles combined with an enormous build-out of highways enabled the era of mega malls to co-locate hundreds of stores in millions of square feet of space making shopping more convenient and for many, more social and fun.
These would include: an investor cannot pick the return but can only choose the level of risk, One cannot accurately predict the market, Diversification lowers risk, Invest to be on the Efficient Frontier and lowcost investments can improve performance vs. high costs.
But as the software technology matures, it will increasingly be able to lash together thousands of low-cost computing nodes and create a flexible, high-performance corporate data center.