I have been selling down since I saw the leaked video which...

I have been selling down since I saw the leaked video which showed the chip does not work. I have a few left but the smug satisfaction I will get when it goes to zero will outweigh the pain of the loss (and I have unrealised CGT gains it can be offset against to reduce that pain further).

A few years back I had a stake in FBR (robot brick layer). They put out a demonstration video of it building a house. The house was so shit I sold my stake that day (at a good profit) and since then it has nearly gone to zero.