You are right Mr Raghavan. There is an anomaly here as pointed out by you. Even if the Railways are short of 2S rakes, and they are using Sleeper rakes, they should be charging only 2S fares rather than sleeper.
As for the other answers given, let me remind you that sleeper is available supposedly, rpt supposedly, between 9.00 p.m. to 6.00 a.m. ! And if as a traveller I refuse what then ?
Mr...
more... Raghavan has pointed out a good anomaly. But to accuse railways of what he is saying is also I think not quite correct. Perhaps this has escaped the attention of the powers that be. Hopefully this posting will merit the attention of those from the Railways who are possibly monitoring these kind of sites! I know they do! Let's see.
good wishes.