Most readers of this blog are from advanced, urban societies. We may not face natural predators but our reflexes will have to be just as fast if a bus driver sufferers a heart attack and careers towards us.
Here is a partial list of urban hazards- in approximate order of likelihood.
1. ROAD TRAFFIC ACCIDENT/MEDICAL EMERGENCY.
There is little that can be done apart from making sure that there is information on your person about pre existing medical conditions and your next of kin (program this into your phone). Consider an identity bracelet if there is anything wrong with you.
2. RUNNING OUT OF CASH.
Always have a �20 note in case ATM machines no longer work. Keep this separate from your wallet.
Never carry your address. This will make it easy for anyone stealing your keys to burgle your home. An umbrella is a good self defense weapon.
4. BECOMING THE TARGET OF UNDIRECTED RAGE OR POLITICAL CORRECTNESS.
Some people are simply looking for trouble and a white middle aged man makes an ideal target due to a combination of peaceful reputation and political correctness. One solution is to claim to be a Muslim and to say you are being targeted due to your faith.
This is relatively unlikely but serious when it happens. Do not spread anthrax around by running from the contamination area. Stay calm. Carry a first aid kit.
6. POWER SHUTDOWN.
This can be quite nasty on the underground. In hot weather you should have some water or fruit juice.