What is Shifting Baseline Syndrome?

Coined by Daniel Pauly in 1995, while speaking of increasing tolerance to fish stock declines over generations, SBS also has roots in psychology, where it is referred to as ‘environmental generational amnesia’. Simply put, Shifting Baseline Syndrome is ‘a gradual change in the accepted norms for the condition of the natural environment due to a lack of experience, memory and/or knowledge of its past condition’
Reference https://earth.org/shifting-baseline-syndrome/