...and an array of calculators to play such numbers games as renting-versus-owning. Sometimes, however, these analytical tools prove insufficiently flexible; a site will suggest ''lowest down payment'' and ''lowest monthly payment...

...played -- such as a polluted stream or industrial dump. Even more fanciful, Berners-Lee described all sorts of analytical tools the scientist could use, tools that might replace our aging Web browsers, letting us display data by color codes...