Planet Krypton

Sir, – Your writer (“Good Week Bad Week”, April 12th) referred to UK culture secretary Maria Miller’s recent travails and suggested that in Britain wrongly utilised expenses were seen as “career Krypton” . Superman’s home planet was Krypton, yes, but it was the meteoric detritus therefrom, namely Kryptonite, that was the substance that rendered him powerless on planet Earth. As any reader of DC comics (not bought on expenses) knows. Yours, etc,

DON McGUINNESS,

Chelmsford Close,

Ranelagh,

Dublin 6