Re: Risk-aversoin
With 9 vs. 2 and a TC of +1, you would be doubling a relatively small bet anyway, so yes, you would risk the extra small bet with a small advantage.
I have three points to make here.
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<LI>Even a one unit bet is still money at risk. And doubling down quadruples the variance.
<LI>Your average bet will be greater than one unit when the TC is +1. Sometimes, you would have made a larger bet and then seen some big cards elsewhere on the table.
<LI>For a very small edge (say 0.2% or less) why would you even want to double down? What if your TC conversion is off by a few cards. You're essentially betting on a coin toss.
My understanding is that risk adverse usually applies to those situations with a max bet out, where the strategy deviation gives a minimum advantage, then there is something to be said.
This is when the risk-averse index could be 2,3 or more points higher than the risk-neutral number. It's worth being risk-averse on ALL marginal plays.