An inventor's path is chorused with groans, riddled with fist-banging and punctuated by head scratches.

Reality TV is anything but.

I've fought court battles over my inventions before.

As a modern employer you have to treat people well.

Hire inexperience. This year we plan to hire 200 engineers - half of whom are recent grads. Young people are not burdened by years of experience. They haven't learned - or been told - what is right or wrong. With engineering, there is no tried and tested path. You try, and fail, and fix, and fail again.

Everyone gets knocked back, no one rises smoothly to the top without hindrance. The ones who succeed are those who say, right, let’s give it another go.

If robots are to clean our homes, they'll have to do it better than a person.