Slice the sweet potatoes into ¼" straws, and rinse under cold water for 30 seconds.
Thoroughly dry the sweet potatoes with a kitchen towel, then toss with olive oil, salt, pepper, and smoked paprika, in a large bowl.
On an unlined baking sheet, arrange sweet potato straws ¼" apart, not touching each other. Bake for 15 minutes without touching, then remove, flip (keeping spacing), and bake for another 15 minutes.
As your fries are baking, melt the cream cheese in the microwave for 30 seconds. When it is hot and runny, mix in the cumin and then the black beans.
When your fries are done, assemble the tacos with all remaining ingredients.
Recipe by The Kitchen Paper at http://c02.ddd.mwp.accessdomain.com/sweet-potato-tacos/