Here is another Jackson's misleading answer, from the transcript of August 14 :
25 Q. Do you accept corporal punishment?
26 A. No.
28 Q. You don't?
29 A. Not ‐ not personally, no, and not as an organisation ‐
30 we don't encourage it.
32 Q. But do you prohibit it?
33 A. Our literature has pointed out that the true way to
34 discipline children is by educating them, not giving
35 corporal punishment. Your Honour, I can only tell you the
36 spirit behind our writings.
However, this is what I found in the Watchtower's article "Reliable Advice for Raising Children" (w06 11/1 pp. 4-7):
With regard to discipline, the Bible states: “The rod and reproof are what give wisdom.” (Proverbs 29:15) However, not all children need physical punishment. Proverbs 17:10 tells us: “A rebuke works deeper in one having understanding than striking a stupid one a hundred times.”
Accordingly, Geoffrey Jackson, as a member of the governing body, was not sincere in his answer, because Watchtower's publications do permit physical punishment.