The use of two-dimensional infrared arrays for astronomical imaging and spectroscopy is now occurring and immensely changing the field. In view of this 'revolution' in infrared astronomy, some of the implications for future infrared spectroscopy are discussed in this paper. A method is presented for comparing the infrared background to future spectrometers at 1-5 microns. Some of the current developments in infrared spectroscopy at Mauna Kea are discussed.