In 1960 the University of California produced a seven minute instructional video for students demonstrating the steps of anaphylaxis using a single guinea pig. Although the video depicts the full anaphylactic process, ultimately resulting in fatality, the use of video technology provided the University with the opportunity to save dozens of guinea pigs that would have been killed in live classroom demonstrations. This effect would then be amplified each year the video replaced the use of live guinea pigs. Subsequently, over the following decades more and more educational institutes employed the use of teaching videos in place of live demonstrations, saving countless numbers of animals. This is an effective example of a Reduction technique.
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