I.T. is not the only industry to have happily latched onto the the former Secretary of State’s famous phrase, “the unknown unknowns”. It’s a good phrase if you must plan or estimate anything because planning & estimating always involve risk.
A recent slideshare by Danni Mannes on Agile Architecture pointed out to me that one should really consider the full matrix:
|Knowns||Things we know, and we know we know them||Things we know but don’t realise we know them; tacit knowledge that we take for granted. Become a problem if we are responsible, and fail, to communicate them to people who don’t know. Also a problem when we start work in a new context and don’t realise that what we ‘know’ is no longer valid, so they become unknown unknowns.|
|Unknowns||Things we know that we don’t know. We can record the risk, and estimate a cost for investigation & discovery||Things we don’t know that we don’t know. This is the quadrant most likely to shipwreck plans.|
My personal takeaway from this is that I will try using this quadrant when listing risks. Just having a space for the possibility of unknown knowns & unknowns can be an impetus to do a little risk-storming & consultation, to help you discover the as-yet-unknowns.
I’ve just read the brief and brilliant mcfunley.com/choose-boring-technology