That's what someone with a blind corder would write. E.g., a skill vital in biotech investing called...ahem..."Statistics". E.g., it's embarrassing when you post a percentage (e.g., "82%") whose sampling variance and selection bias you don't understand. It's in your blind corner so you can't see anything "smart" when a statistician posts about it.
If you are honest with yourself, that should tell you something about your blind corners...so maybe instead of considering these "not smarts" you could decide to educate yourself...mmhhh I could suggest 3: - Statistics (unable to assess the robustness of numbers) - Behavorial investing (falling prey to your emotions) - OTC manipulations (not detecting the fraud patterns)