 And John Morris in Malawi WhatsApped us to say the canoe has remained much the same throughout the passage of time. Not much, he reckons, has changed since its invention. That, John, is a very good point. Thanks to everyone who got in touch. Do get in touch with us on the normal channels whenever you like and we will try to include you in tech life. Still to come, we've got more sports tech. The two-decade quest to design a mountain bike that might be suitable for the Paralympics.