The bicycle is a curious vehicle. Its passenger is its engine.

Written by Guido Jansen in
October 2006

En dat was ik vandaag! Heb maar even van het mooie weer gebruik gemaakt om met het mooi opgepoetste geval door de wegen van de provincie Utrecht te crossen. Utrecht - Bilthoven - Werkhoven - Cothen - Wijk bij Duurstede - Langbroek - Doorn - Driebergen Rijsenburg - Zeist - De Bilt - Utrecht was het rondje van 50km dat ik vandaag gemaakt heb en dat was best leuk! Wel helemaal kapot op de bank gezeten de rest van de dag maar dat hoort er nu eenmaal bij denk ik....

Recent posts
Optimization hierarchy of evidence
Optimization hierarchy of evidence

A hierarchy of evidence (or levels of evidence) is a heuristic used to rank the relative strength of results obtained from scientific research. I've created a version of this chart/pyramid applied to CRO which you can see below. It contains the options we have as optimizers and tools and methods we often use to gather data.

[EN] Datascience can do what?
[EN] Datascience can do what?

This is a bonus episode with Emily Robinson (Senior Data Scientist at Warby Parker) en Lukas Vermeer (Director of Experimentation at Booking.com). In her earlier session that day, Emily said that real progress starts when you put your work online for others to see and comment on which in this case was about Github. Someone from the audience wondered how that works out in larger companies where a manager or even a legal department might not be overly joyous about that to say the least so I asked Emily about her thoughts on that. Recorded live with audience pre-covid-19 at the Conversion Hotel conference in november 2019 on the island of Texel in The Netherlands. (oorspronkelijk gepubliceerd op https://www.cro.cafe/)