There's a saying about how 'What doesn't kill you makes you stronger' that many undergoing chemo- and/or radiation therapy often hear, or even use themselves, to make light of the unpleasantness of the process and to remind themselves that there is a flip side to the nastiness of the "planned poisoning" that they are enduring: it may extend their lives and is therefore “better than the alternative” (as in, death).
On the other hand, do I feel smarter? Most emphatically, yes. The things that addressing and overcoming adversity teaches you - about yourself, about those who love you and are loved by you, about your professional colleagues both direct and indirect, about total strangers and/or long-lost friends; about nutrition, about the Internet, about the healing power of music and above all of love, about cognitive mysteries such as "chemo brain" and the reassurances increasingly offered by brain science; about physical capacity, about mental agility, about emotion, about faith…
In truth there isn't a single aspect of the human condition about which you do not, on being confronted with an early departure from the game of life, end up a tad smarter if on the contrary you have the good fortune to survive.
"Survival" and "survivor" remain the metaphors of choice when dealing with people like me but, speaking here only for myself, I am not sure how useful those words are. We are *all* survivors, after all; we all survive, daily, onslaughts of inconsiderateness or even plain cruelty, of injustice either direct or indirect, of disappointment and/or even despair. We all survive week in, week out the challenges of work and play, of life and love, of learning and of teaching, and of the eternal search for meaning in which we are all, to greater or lesser extents of awareness, engaged.
Just as travel broadens the mind, or university, so pancreatic cancer it turns out is a hugely enriching life-phase that does, no doubt about it, leave you smarter. That it might just as easily have left you dead is not I think the point; many things kill us, from traffic accidents to natural disasters. But how many things actually make us smarter? We learn about humility - that is a given when quite literally your life (in the form of your innards) is for multiple hours in the hands of a surgeon. We learn about the irrefutable power of positivity. We learn about the boundaries of medicine and the central role of self-healing. We learn about the perils of certainty, and the corresponding importance of flexibility and agile modification of behavior and/or treatment. We learn about the often neglected importance of hydration. We learn about what truly makes us, and those around us, tick.