A. No.
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   Q. If someone made a loan with an interest charge & had it recorded in a shtar & now he regrets his misdeed & wants to do it right , does he lose it all or only the interest ?
  A. R. Meir - he loses it all. 
      Chachomim - only the interest. 
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   Q. If someone made a predated or postdated document , is it valid ?
A. The first no , the second yes.
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 Q. What is the 3 letter hebrew word Rashi uses to explain why the predated is posul ?
   A. Sheker
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  Q. What are the 2 options either of which can permit a person to negotiate a contract ?
A. Either there is an established market rate , or if the seller has some of the product in stock.
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