Beyond

1. During the last decades of the twentieth century archaeologists discovered ever-more detail about the lives of prehistoric people. A major archaeological 'discovery' alters our views of the past.

2. Today's court proceedings determine whether a person is guilty - or not - of transgressions in their past. And at some point in the future a legal appeal may reverse the 'truth' about the past.

3. If two people - for instance a married couple - argue, it is most probable that what they each say about it to their respective friends will bear little resemblence to the other's accounts.