Systems and methods for conducting a set of experiments on an application having a plurality of users are provided. Each experiment is identified by a respective experiment identification (ID) and is associated with a respective group of experimental variations of the application. A system includes an entropy source module that assigns a user group number to a designated user. The user group number is less than or equal to an entropy cap, which is less than an expected entropy, which represents a total number of different states of the experiments. The system includes an experiment module that determines a designated one of the experiments to be conducted on the application. The designated experiment is identified by a designated experiment ID and is associated with a designated group of experimental variations of the application. The experiment module assigns a designated variation to the designated user based on the user group number.