Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 6:11:

• Kupsabiny: “If a person argues for a long time, that brings confusion. Then there is nothing that saves people!” (Source: Kupsabiny Back Translation)
• Newari: “The more words there are
  the less meaning there will be in them.
  So then what benefit will there before anyone?” (Source: Newari Back Translation)
• Hiligaynon: “If we (incl.) keep-on arguing, our (incl.) speaking without value still [intensifier] increases, and it does not give benefit to us (incl.).” (Source: Hiligaynon Back Translation)
• English: “The more that we talk,
  the more often we say things that are senseless,
  so it certainly does not benefit us to talk a lot.” (Source: Translation for Translators)