...  definitions 
The research into heritagefutures makes frequent reference to a number of theoretical concepts. For ease of reference, some definitions are provided here.
future studies XXX.
place theory XXX.
precautionary principle There is no single clear and universally agreed definition of the precautionary principle, the following definition draws on the Rio Declaration on Environment and Development (1992 principle 15):
"In order to protect the environment, the precautionary approach stipuates that where there are threats of serious or irreversible damage, lack of full scientific certainty shall not be used as a reason for postponing cost-effective measures to prevent environmental degradation.”
stewardship XXX.
strategic foresight XXX.