Mr X is a real state business magnate. He hired you to write program for predicting housing prices. …
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The fastest solutions runtime seems to be too fast here 
I want public attention 
sorry mod attention 
@hjr265
@hjr265, it is a serious post. The fastest runtime here is 439121.6s. Which is probably an error.
@touhidur This is actually a known issue.
Here is the root cause of it: Updating from older version that have written time.Duration causes bad data - maybe add a note? · Issue #212 · globalsign/mgo · GitHub
We had to manually fix all of the duration values in our database. I guess, this is one of those that we have missed. Thanks for pointing it out.