This holiday season, when we Google for the most trending gifts, compare different items on Amazon or take a break to watch a holiday movie on Netflix, we are making use of what might be called “the three R’s” of the Internet Age: rating, ranking and recommending. Much like the traditional “three R’s” of education “reading, ‘riting and ‘rithmetic” no modern education is complete without understanding how websites’ algorithms combine, process and synthesize information before presenting it to us.