Vicsek Particles (IMAGE) NYU Tandon School of Engineering Caption Researchers inferred the size of a realistic collective from measurements of some of its units, whose random motion contains the footprints of the entire system. Credit Maurizio Porfiri Usage Restrictions For use only by registered members of the press License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.