How many statisticians does it take to ensure at least a 50 percent chance of a disagreement about p-values?

Reference:

http://fivethirtyeight.com/features/statisticians-found-one-thing-they-can-agree-on-its-time-to-stop-misusing-p-values/

http://www.nature.com/news/statisticians-issue-warning-over-misuse-of-p-values-1.19503