The strength of the first half of Futurama's seventh season (sorry, but that's the least convoluted phrasing I could come up with) has been consistency. Flashes of genuine inspiration have been in short supply, but the laughs have been coming at a steady enough rate to justify continued viewing. The writers evidently have evidently given up on devising coherent stories, but a few episodes have elevated themselves on the strength of individual gags. Fun On A Bun represents the high point for humour, while Near Death Wish showed the series still had some heart to accompany its increasingly cartoonish absurdism.
'31st Century Fox' and 'Naturama', unfortunately, bring the season to its midway break with not only its two worst episodes, but two of the worst the series has ever done. '31st Century Fox' scraped together a handful of chuckles, but its gags felt too forced to compensate for a meaningless, scattershot narrative which only seemed to exist to justify the lame 'joke' in the title. 'Naturama' took that same pointlessness and multiplied it while subtracting all the laughs.