The discourse that follows is thought to be evolutionary rather than radical, and surprise-free in terms of achievability if not likelihood.
From the theaustralian.com.au
I cannot promise freedom from mood fluctuations, depression, anxiety, and so on, but I can promise the achievability of contentment and satisfaction.
From the blogs.psychcentral.com
Before settling on these goals, a range of alternatives were tested against measures of previous economic performance to ascertain likelihood and achievability.