Consider a situation which you trust your friend for 35th times although he failed in previous 34 time!

You are saying to your self I'm such a fool that do this again.

What's the phrase for describing this situation?

  • 1
    If you do so consciously you could say graciously trust
    – Unrelated
    Jan 2, 2017 at 17:21
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    It's similar to throwing good money after bad, but that's only used for spending money to keep something going.
    – Andrew Leach
    Jan 2, 2017 at 17:30
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    a fool's errand, a hopeless task.
    – Lambie
    Jan 2, 2017 at 17:32
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    From a "criminology and penology" perspective, you can refer to this foolish mistake of yours as "recidivism". The wikipedia meaning of this word is the following --------------- "Recidivism (/rᵻˈsɪdᵻvɪzəm/; from recidive and ism, from Latin recidīvus "recurring", from re- "back" and cadō "I fall") is the act of a person repeating an undesirable behavior after they had either experienced negative consequences of that behavior.
    – Monzoor
    Jan 2, 2017 at 17:38
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    One phrase for this is "a triumph of hope over experience", normally used when someone marries for the umpteenth time.
    – Mick
    Jan 2, 2017 at 17:53

2 Answers 2


The quote "The definition of insanity is doing something over and over again and expecting a different result" has been attributed to Albert Einstein. So insanity would describe your situation. :-)

  • Please read the long comment I wrote as a post
    – MR_BD
    Jan 3, 2017 at 14:46
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    The counterargument is given by the Bible. Peter asked Jesus how many times should he forgive his brother. Peter thought maybe seven times might be a fair limit. But Jesus said "seventy times seven" (Matthew 18:21-22). Biblical scholars will tell you that seven was used to represent a large number as there was no word for infinite. I will point out that forgiveness is not the same thing as lending money.... Jan 3, 2017 at 15:57
  • Fine. That's what I used to believe when was young.
    – MR_BD
    Jan 3, 2017 at 16:02
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    Just presenting both sides of the argument. :-) Jan 3, 2017 at 16:05

There is a word for this in Persian which is translated to stupidity but according to this quote of Einstein it's better to say insanity. As a common example it refers to cows because they know that if they were fat they will killed but they eat like a stupid! I think it's better so say like a insane.

Insane is translated to something means mad or moron.

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