&gt; This mechanism, nicknamed &quot;place oriented programming&quot; by Rich Hickey [REF], saves storage space but makes it impossible to retrieve the entire history of a particular record. This design decision reflects the computer scientist’s perspective that ‘history’ is less important than the price of its storage.<p>Funny, I don&#x27;t recall that sentiment from any of my CSCI classes. Seems to me like this methodology has more to do with the fact that a 5 MB hard disk (for example) used to be the size of a washing machine than it does with whether or not the person writing the DBMS was a computer scientist.