Why do some countries produce so much more output per worker than others? 1 edition

Debug Stats

SUMMARY

infobase: {'count': 3, 'time': 0.06102299690246582}
memcache.set: {'count': 3, 'time': 0.0025029182434082031}
memcache.get: {'count': 9, 'time': 0.02286076545715332}
total: {'count': 0, 'unaccounted': 0.11041092872619629, 'time': 0.20865201950073242}
solr: {'count': 1, 'time': 0.0070989131927490234}
memcache.get_multi: {'count': 5, 'time': 0.0047554969787597656}

Details

memcache.get 0.000826835632324
    {'hit': True, 'key': u'/works/OL2669711W'}
memcache.get 0.000211954116821
    {'hit': False, 'key': 'd/works/OL2669711W'}
infobase 0.0187830924988
    {'path': '/openlibrary.org/versions', 'data': {'query': '{"limit": 5, "key": "/works/OL2669711W", "offset": 0}'}, 'method': 'GET'}
memcache.get 0.000181913375854
    {'hit': False, 'key': 'd/works/OL2669711W'}
memcache.set 0.00031590461731
    {'key': 'd/works/OL2669711W'}
memcache.get_multi 0.000285863876343
    {'found': 1}
memcache.get 0.0016131401062
    {'hit': True, 'key': u'/authors/OL389453A'}
memcache.get 0.00110697746277
    {'hit': True, 'key': 'd/works/OL2669711W'}
infobase 0.00700092315674
    {'path': '/openlibrary.org/count_editions_by_work', 'data': {'key': u'/works/OL2669711W'}, 'method': 'GET'}
memcache.get 0.000273942947388
    {'hit': True, 'key': 'd/works/OL2669711W'}
memcache.set 0.00046706199646
    {'key': 'd/works/OL2669711W'}
solr 0.00709891319275
    {'query': {'key': u'OL2669711W'}, 'fields': ['cover_edition_key', 'cover_id', 'edition_key', 'first_publish_year']}
memcache.get_multi 0.000702857971191
    {'found': 1}
memcache.get_multi 0.00120186805725
    {'found': 1}
memcache.get_multi 0.0018298625946
    {'found': 1}
memcache.get 0.00254893302917
    {'hit': True, 'key': 'd/works/OL2669711W'}
infobase 0.0352389812469
    {'path': '/openlibrary.org/things', 'data': {'query': '{"type": "/type/list", "seeds": {"key": "/works/OL2669711W"}, "limit": 50, "offset": 0}', 'details': 'False'}, 'method': 'GET'}
memcache.get 0.000922203063965
    {'hit': True, 'key': 'd/works/OL2669711W'}
memcache.set 0.00171995162964
    {'key': 'd/works/OL2669711W'}
memcache.get_multi 0.00073504447937
    {'found': 1}
memcache.get 0.0151748657227
    {'hit': True, 'key': 'inlibrary.libraries-hash'}