Errett Callahan
...that American archaeologist and flintknapper Errett Callahan produces and sells obsidian scalpels that are 100 times sharper than the traditional surgical scalpels made of steel?
...that American <a href="./Archaeology" id="mwBgg" rel="mw:WikiLink" title="Archaeology">archaeologist</a> and <a class="mw-redirect" href="./Flintknapper" id="mwBgk" rel="mw:WikiLink" title="Flintknapper">flintknapper</a> <b id="mwBgo"><a href="./Errett_Callahan" id="mwBgs" rel="mw:WikiLink" title="Errett Callahan">Errett Callahan</a></b> produces and sells <a href="./Obsidian" id="mwBgw" rel="mw:WikiLink" title="Obsidian">obsidian</a> <a href="./Scalpel" id="mwBg0" rel="mw:WikiLink" title="Scalpel">scalpels</a> that are 100 times sharper than the traditional <a href="./Surgery" id="mwBg4" rel="mw:WikiLink" title="Surgery">surgical</a> scalpels made of <a href="./Steel" id="mwBg8" rel="mw:WikiLink" title="Steel">steel</a>?