For some reason, all the topics in beta and programming ultimately leads to 
issues relating to our pathetically limited memory computing machines that 
poorly representing proper numbers.

Can we have a separate forum for number representation issues?

Can we have a J operation mode that treats all numbers as extended precision 
rationals by default and barks (or just runs forever) upon irrational numbers?

Here is a question for the proposed new forum as a start.

      NB. J does not get the 15th digit of Euler's number correctly!?
      10|<.(^1)*10^i.20
   2 7 1 8 2 8 1 8 2 8 4 5 9 0 0 0 0 0 0 0
      NB. Putting in x does not help either!?
      10x|<.(^1x)*10x^i.20x
   2 7 1 8 2 8 1 8 2 8 4 5 9 0 0 0 0 0 0 0
      NB. But this x: helps, why?
      10|<.(x:^1)*x:10^i.20
   2 7 1 8 2 8 1 8 2 8 4 5 8 9 1 2 8 1 6 5
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