Then use your thumb on this similar hand to press down on the front of the primary invoice and pull it out from underneath the other thumb’s grasp by swiping laterally. Continue banding each stack of fifty bills and setting them apart. Once you’re out of payments, add each stack together starting with the higher denominations and then add any leftover payments afterward. Indeed, counting money facilitates what University of California, Irvine anthropology professor Bill Maurer calls a “psychosocial” relationship…