Mirano Cafiero and Saskia and Malakai Wade really do believe that in the future women will play a more prominent role in the world of high tech and computing. No, the record to date hasn't been good. But you can afford to be optimistic when you're 8, as Saskia is, or 12, as Mirano and Malakai are. Still, the girls aren't leaving anything to chance. Which is how they found themselves last week standing before a crowd of people giving a presentation during the Women in Open Source segment at the Southern California Linux Expo, one of the biggest open-source software conventions on the West Coast. They were there to be seen and heard, never mind the old admonition concerning children.