||There's something quite effective about this episode. Delving into people's pasts can get a bit tedious sometimes unless it's handled well. A lot of the first half-hour was, but the twist saved it. So, Data's 'mother' turns out to be an android. On first viewing, that caught me completely on the hop. Forearmed, I was able to spot the clues in advance, and I'm astonished that I missed them first time around. It's a real credibility stretch to suggest that she never knew her own nature, but I'll suspend my disbelief here. I'm curious about how Dr Soong updated the message chip. Did he deactivate his 'wife' and add to the programme every now and then? It's a pity that Data didn't add his own message, just in case anybody else found out.