Real estate investor Stephen Yin owns or co-owns nine rental properties in Birmingham, Alabama. He built a spreadsheet that helps him evaluate whether or not a property is worth buying. He's looking ...

Real estate comps, short for comparables, are a way to gauge how much a property is worth by comparing it to other, similar properties. Real estate agents and home appraisers use comps, among other ...

In the early 1970s mathematician Donald Knuth spent a sabbatical with his wife in Norway. The time was meant to be spent relaxing. Yet one night he woke up his partner in a state of agitation. He ...