'er ... well , if you think of memory as a series of little shelves or , or , or holes , archchancellor , in which you can put things , well , we found a way of making a sort of memory which , er , interfaces neatly with the ants , in fact , but more importantly can expand its size depending on how much we give it to remember and , er , is possibly a bit slow but -- -- ' 'it 's a very loud buzzing , ' said the dean .