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	a={}
	function a:fact(n)
		if n == 1 then return 1 else return a:fact(n - 1) * n  end
	end
may be write
	a={fact = function(selF, n) if n == 1 then return 1 else return
selF:fact(n - 1) * n  end end}
	print(a:fact(5))
So the trick ? 33 on the face.