>> i thought if they were interested in pets.com or webvan may still be available, they can take those out. >> is that heavy sarcasm? >> i'm just saying, listen, the way i think about this is like yahoo! is expected to do 3, $3.5 billion in sales, verizon is 130, something like that. it's not going to really move the needle unless they have some other designs. >> it does sound like a back to the future move. they don't need a portal, i don't think they need content and i think that would be a strange thing. clearly, yahoo! has a lot of eyeballs and there's no question the core has value but i don't think this is transformative either. thank god this deal may be going down because this is an asset that is falling apart every day. >> i think david was point out for every billion that they get on this sale, it's about 75 cents on yahoo!'s price. even for them there are much bigger questions, clearly. >> there are. but the biggest questions for yahoo! forget management. it's really about tax efficiency, it's about a spin-awspin spin-off, it's all about yahoo! japan. i own it and i own alib

we will have webvan. food will be delivered. give us more time, and it will get there.: what about public acceptance? google bought boston dynamics, the futuristic humanoid robot company, and they eventually sold it because the public was scared. >> that is part of timing, right? whether the public accepts it. will the regulatory regimes catch up to it? it all goes into that. most of the technology, most of the progress we dream up will happen, but is the timing take advantage of it? that goes to the reward part of the risk. emily: what about trying these one-time cures for cancer? i don't know how you put a price on that. i don't think you can put a price on that. are returns important? >> absolutely. you have to have a business model that can sustain growth. emily: are these things creating new business models? >> absolutely. we all know computing, the cost of computing goes down. most people don't realize the thinking goes on in biology. the cost of writing dna goes down. we know that we are going to be able to write human genomes in about 10 years at an affordable p