My first use of Ariel Rubinstein’s International Cafe Guide was a big success.  Think Coffee on Mercer and 4th, just half a block south of the Economics and Politics Departments, is a great place to think which is what Rubinstein wants.    There is free wifi (this may distract from thinking!), it’s not too loud and I always found a table easily even though it’s busy. But it’s also a great place to drink which is more of what I’m after.  The coffee is delicious and they are great at latte art.