Only using words, I expect. For example Dennis Rawlins often addressed Owen Gingerich in his publications... eg http://www.dioi.org/sca.htm http://www.dioi.org

Only using words, I expect. For example Dennis Rawlins often addressed Owen Gingerich in his publications... eg http://www.dioi.org/sca.htm http://www.dioi.org/sca.htm