FocusEconomics included me among the 23 experts asked the question "Why is productivity growth so low?" You can see my answer above and all of our answers at this link. Here is the list of economists offering their takes, in the order they appear in the article:

1. Mike Norman
2. Karl Denninger
3. James Picerno
4. Daniel Lacalle
5. Alden Abbott
6. Constantinos Charalambous
7. Timothy Taylor
8. Dean Baker
9. Carola Binder
10. John Cochrane
11. Livio Di Matteo
12. Colin Lloyd
13. Elliott Morse
14. Mike "Mish" Shedlock
15. George Selgin
16. David Andolfatto
17. Jeff Miller
18. Antonio Fatas
19. Miles Kimball
20. Neven Valev
21. John Quiggin
22. David T. Flynn
23. Steve Keen

FocusEconomics sets up the question well at the beginning.