In what ways does Think-Tank misinterpret innocent nursery rhymes as threats to the Martians? (The Book That Saved the Earth)

Rhyme- Mistress Mary from Mother Goose  concludes people on earth are:  advanced  grow crops of rare metal , high explosives Hey Diddle Diddle  humans highly civilized  taught musical culture, space techniques to domesticated animals  dogs taught sense of humour  may be launching inter- planetary attack of millions of cows Humpty Dumpty  resembled Think Tank  fears discovery by Earthlings/captivity and overruled  orders immediate evacuation of Mars/ space capsule to escape himself