My friend arranish, who is in her seventies, and who has been living with memory deterioration for some time, has been using Google this way ever since there was Google and I figured out it would help. 1995? Before that she was using the thesaurus function in Protext, because if you have the almost right word, that can get you the right word. She saw her mother go down into Alzheimers, and she's such a brilliant person, and... I think it's a reasonable time in Britain and I'll phone her.