Thanks for making the points. "Expecting the unexpected" is entrenched in my trading philosophy. So much so that I have to now tweak that into "expect what no one else expects". In other words, I don't follow the herd. This has worked well for me, as I was able to quit my job and become a full-time trader back in 2009. I knew that the new bull market was underway, and I didn't want to miss a minute of it.While it may not be realistic to expect that, there's nothing that tells us that it absolutely won't happen. You might have a good case for arguing that; but at the end of the day it's a conclusion which stems from inductive reasoning. And to place a guarantee on something like that is not a behavior common among consistently successful traders, at least that I've seen.
I think Simple has the much better worldview for trading profitably here. Although he might have misspoke labeling the possibility as realistic, it's a healthy practice to acknowledge the possibility of highly unlikely scenarios coming to pass. The briefest overview of market history should drive that point home.
I'd caution anyone reading this against projecting your own expectations, well-reasoned as they may be, as an absolute in regards to reality. Especially in this business, that particular flaw has led to eventual catastrophic failure for a good number of traders.
However, I would venture to say that a market double without a 10% correction cannot happen. That didn't even happen during the dot-com bubble, or that crazy period of 7 years that the Dow went from 3000 to 11000. There were numerous 10% corrections.
I leave you with one of the many golden rules of investing: The market doesn't go straight up.