To produce an unimaginative or derivative work of art, therefore, will not have as desirable an effect on potential partners.

ECONOMIST: Come up and see my etchings

And if no suitable species exists, then Synthetic Genomics's researchers will take the desirable characteristics from several and create what is, in effect, a new one.

ECONOMIST: Biofuels from algae: Craig's twist | The

Not only has the celebrity effect increased public awareness of the disorder, bipolar disorder has now become a desirable diagnosis.

BBC: Why patients are saying 'I want to be bipolar'