Already covered by other commentators, but this is straight up wrong if they are implemented in certain fashions. Here is a large history causing slow load tim

Already covered by other commentators, but this is straight up wrong if they are implemented in certain fashions. Here is a large history causing slow load times; https://bugzilla.mozilla.org/show_bug.cgi?id=223476 https://bugzilla.mozilla.org/show_bug.cgi?id=223476 Here is their recommendations regarding download history, which I myself have experienced (too many downloads remembered forever slows down the browser) https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding#w_clear-download-history https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-re... There is nothing inherent in the design of A hypothetical browser that would make it slower over time, its just a matter of people make assumptions and those assumptions are often wrong, and then performance suffers.