Actually you’ve not done anything really, very, humungously wrong to end up here, and actually, neither have we.
All that occurred was that you click the heading of a list of pages, rather than one of the pages in the list which had something interesting written into it.
Rather than leave you with a silly looking page which said something like “null” – we thought we’d give you a silly looking page with a yellow chappie saying OOPS! instead.
The first option was practical, the second option, well, I think it’s far more fulfilling.