Fortunately, I have spent 36 of my 39 years in engineering working in a traditional single-person office. I started my career in an office, then took a transfer and spent my second year in a room with four board drafters, two other young EITs, and one young PE, before getting back into an office. I spent years 15 and 16 (at another firm) in a room with one cad drafter, three EITs, and a bunch of field techs of various sorts (fortunately, the field techs were gone most of the time). Both rooms were noisy, but not out of control noisy.
However, I have better than average hearing (both level and frequency range; this is offset by worse than average eyesight) and the noise bothered me more than it did the other people in the cubicles, at least for certain tasks. I learned very quickly during my first stint in a cubicle that I could handle the mathematics/technical side of my job (preparing or reviewing calculations, designs, drawings and details, etc.) in a noisy room, but not the language side of my job (reading, writing, and editing). So, during my first stint in a cubicle, I usually did the language side of my job in a conference room or the office library. During my second stint in a cubicle I was tied to a computer so I spent about $250 on one of the early Sony Walkman disk players and got a 12-disk set of lyric-less classical music. This worked pretty well, but I was sure glad to get back into an office at the first opportunity.
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"Is it the only lesson of history that mankind is unteachable?"
--Winston S. Churchill