A follow up to this post. In it, the more quantifiable aspects of intrinsic value were covered while noting that meaningful estimates of value must go beyond what can easily be quantified.In fact, I chose to use an example outside of the investment discipline -- Lord Kelvin's error in estimating the earth's age -- in an attempt to illustrate the point.Berkshire's insurance 'float' is one example of a tough to quantify but important contributor to value.The Insurance section of the latest Berkshire Hathaway (BRKa)shareholder...