The Science of SingleBy: Rachel Machacek Read Rachel Machacek's blogs and other content on the Penguin Community. One year of dating. One year of looking for love. One uproarious and touching memoir. After years of dating without a connection, Rachel Machacek vowed to try a more dedicated, less slipshod, more scientific way of finding love. So, she committed a year of her life to trying every mainstream (and not so mainstream) method of meeting the right guy. In The