How to say your plan is of no earthly use. in Japanese
1)
君君(kun) (pn) you/buddy/pal/monarch/ruler/sovereign/masterのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question計画計画(keikaku) (n,vs) plan/project/schedule/scheme/program/programmeはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh全然全然(zenzen) (adv) not at all/wholly/entirely/completely役に立たno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbないない(nai) (aux-adj) not/emphatic suffix。。(。) Japanese period "."
