The article is interesting but I don't think we can draw too many conclusions yet due to Kepler's observational biases. For example, the similar size pattern se

The article is interesting but I don't think we can draw too many conclusions yet due to Kepler's observational biases. For example, the similar size pattern seen may only apply to closely packed systems rather than more widely spaced ones, and we don't have a great deal of information on the latter type.