hi, I'm just reading your new book and struggle with getting from risk weightings to cash weightings (don't call me stupid please ;-)) you have an example somewhere in the middle (i don't have the page number as I read it on my kindle). risk weighting 50/50 for equities and bonds. volatility is 15.2% for equities and 6.1% for bonds. how the heck do you get to the cash weightings of 29.4% and 70.6% ? i know you explain it on page 107 but I don't get it can you explain it please? by the way. I will be in Prague for the QuantExpo. hope to see you there!