The Pensieve

With the onset of interactive web pages that update dynamically the moment you move your mouse over a control, development of an AJAX (Asynchronous Javascript And XML) based web site adds to the complexity. For one, they mess up with your browser history and limit your ability to bookmark a particular page as almost all contents are loaded "in-page". The other disadvantage I see is the in-ability of custom scripts to access the site and extract information. For example, I can write a perl script that can access the Indian Railways page and query the arrival of a particular train. If the site used AJAX, it's going to be more difficult. Cellphones that bundle with micro-browsers either lack javascripting or access is usually blocked by service providers leaving you grapping with an empty framework with no actual data in it. Development wise, you introduce a sense of uncertainty into your web-page where when your page looks like it has completed loading, more data is still b...