But that need not stop you enjoying Mr Brody's book, even if you hesitate to put him in charge of your destiny.

ECONOMIST: Farming and history

If you hesitate before signing on to the idea of imported science, it could be because you are only a fair-weather believer in free trade.

FORBES: The Economics of Envy

In addition to the questions that you've prepared to ask your doctor, don't hesitate to ask questions during your appointment if you don't understand something.

CNN: Occupational asthma

If you have any questions, please do not hesitate to contact me.

FORBES: Take-Two Snubs EA

So, for your chance to get involved with the experiment, or if you have any ideas or suggestions, please don't hesitate to get in touch through the Facebook page.

BBC: Facebook profile photo experiment goes live