Paris has never been a threat from beyond the arc. Although he converted 37% of his 3 attempts as a sophomore, his career average prior to this year was 30%. The most 3s he had ever made in a season was 14. He's already made 19 this season!
Donahue's system deserves some credit for the improvement. Plus the general maturity is a factor. I guess the biggest explanation for the improvement is Biko's work on 3s during the offseason. Supposedly it was a focus and he shot hundreds a day. Unfortunately too many guys ignore their deficiencies in the offseason. I am glad to see Biko did not. If he keeps up this pace during ACC play, BC will have done something rare: replaced a serviceable player with a killer offensive weapon without making a roster change.