joel gunn rector of meadowcroft projects, has designed a computer methodology that integrates information from every area of meadowcroft research. computer analysis makes it possible to draw an accurate picture of how the people who visited the rock shelter interacted with their environment. >> i think the raw data, generally using a thing which factor analysis which is data reduction process, it looks for things that behave together. we say people during one time we're eating a lot of fish and as they happen to be down by the stream they also picked up a lot of crabs and carried them up to the site and deposited crab claws and fish scales on the site. and then during other times, when they perhaps did not favor marine things or things like that they would have gone to hunting deer or something like that. so there is going to be a simultaneous drop off in fish scales and crab claws. that's what's known as a correlation. things will come out of the bone material about their hunting patterns. things will come out of the stone tool material that tell about how their stone tool making habits

joel gunn, co-director of meadowcroft project designed the computer methodology integrating information from every area of meadowcroft research. computer analysis makes it possible to dry an accurate picture how the people who visited the rock shelter interacted with their environment. >> i take the raw data and generally use a technique called factor analysis, which is a data reduction process. it looks for things that behave together. people at one time, say, were eating a lot of fish, and because they happened to be down by the stream picked ut af of crabs, carried them to the site and deposited crab claws and fish scales on the site. and during other times when they perhaps didn't favor marine things like that, they would have gone to hunting deer or something like that. so there's going to be a simultaneous drop-off in fish scales and crab claws. well, that's what's known as a correlation. things will come out of the bone material about their hunting patterns. things will come out of the stone tool material to tell about how they're stone tool-making habits changed. all of these th