Without new words how could we have progress? My pet hate is billion, which England in the 1950 meant 1000000^2 and trillion 1000000^3 and quadrillion 1000000^4 etc. Which all made mathematical sense. In the modern sense, billion has only a very contrived relation to 2 and likewise trillion and 3. When that US journalist first misused the word back in the 1930, his editor should have been stamped on it and pointed out there is a perfectly good word milliard which means 1,000,000,000. As to hacker, isn't an even older meaning, someone who rides a horse in a casual way? There is also the chiefly Somerset (UK) surname 'Hacker' which according to the Oxford book or names means butcher or woodcutter.