Gary Griggs (no relation to the author), is another coastal geologist who studies the erosion along the coast, and wasn’t involved with the current study. Griggs is more hesitant to compare the events of 2015-2016 with events so far back in the past. Wave strength data has only been collected for about 40 years, and while early settlers in California might have enjoyed the beach, they weren’t mapping it seasonally. “We don’t have 100 years of beach profiles,” Griggs says. But, the unavailability of longer data sets notwithstanding, “I think they’ve done everything they can with the data available.” Griggs says, agreeing that this was a very large and powerful event that affected the entire West Coast.