Yes, I have left a comment there and no, I don\’t know whether it will get through. What I said was:
Richard: because we don’t know about the future, because we don’t know which technologies will be possible, which products of which new technologies people will want, we need to have some sector of the economy where experimentation takes place.
The market in short.
Precisely because we don’t know what the future holds we cannot plan for it: thus we cannot use government to do said planning for us. Moving 5% of GDP from the government, planned, sector to the unplanned, experimental, market sector is thus a very reasonable response to exactly your point: that we cannot forsee the future.
Other critiques are welcome in comments.