A good basic rule of thumb is to take your body weight (in pounds) and divide it by 2. (mindbodygreen.com)
The guide aimed to help hotel managers to address issues mentioned in the reviews, react to negative reviews and to provide basic rules of thumb. (olery.com)
Basic rule of thumb when it comes to judges addressing facts is a judge wears what is called «13th juror» hat - the controlling doctrine is «reasonable person» a jury is considered a reasonable person (judge's view of facts are controlled by «reasonable person's view» so would a reasonable person agree or disagree with your contentions which boils down to the art of the argument - (law.stackexchange.com)