These handwritten changes are kinda mindbending. 18yos qualify for the child tax credit for 7y, then it reverts to 17yos?

These handwritten changes are kinda mindbending. 18yos qualify for the child tax credit for 7y, then it reverts to 17yos? https://t.co/UB5kEvbG6O pic.twitter.com/zrLnnac9iV

— southpaw (@nycsouthpaw) December 1, 2017