Obsolescence in Acoustics

Read about this site in today's paper. Got me to thinking about skills in my profession that are now becoming, or have become, obsolete. Among them:

• Using sound level meters with analog (needle) displays (though Radio Shack still sells one).
• Using special protractors and level recorder chart strips to determine reverberation time from impulse response recordings.
• Using a starter's pistol, a large balloon, or two 2x4s to generate the aforementioned impulse responses.
• Printing drawings on vellum to create bona fide blue blueprints. (I do miss the smell of ammonia around the office...)
• Changing pens in a pen plotter.
• Editing reel-to-reel tapes with a razor blade and some Scotch tape.
• Attaching filter sets to sound level meters to measure octave-band sound levels.
• Writing acoustical "modeling" and analysis programs in BASIC or Fortran.
• Amassing hard copies of JASA.
• Measuring relative humidity with a sling psychrometer.

I'm sure I'll think of more! 8^D