still with us is martin mignot.k to 2015, you wrote a piece saying the $1 billion food tolivery wars would eat in the dominance of traditional grocery retailers. it's happening now. how much further has it got to go? are we hitting saturation point? martin: i think it's the beginning. i'm surprised it's taken so long for traditional retailers to enter the space, to start realizing that they have to do something. it's really taken a long time for some really well-capitalized, cash-rich companies to really move, but i think it's just the beginning. food penetration in the u.s. is close to 1% or 2%. it's a bit closer to 5% in the u.k. on average for the rest of the retail industry, it's close to 25%. food is much harder to deliver. it's fresh. logistics are compensated. i think -- are complicated. i think there is still a way to go. i would be focusing more on the takeaway market, which i think will eat in the grocery market -- eat into the grocery market. eventually, cooking may go the way of -- caroline: even though