I feel for you and your father. I have myself experienced that with several health practitioners: wrong diagnostics and prescriptions, overly enthusiastic dentists who recommend work done that are unnecessary, etc. Thankfully, I have not experienced any dramatic incidents... yet. My advice to you is to read reviews of your health professional and research your problems in advance if you can. Also seek a second or third opinion before making any major or costly decision concerning your health.

At best you're 50/50 when " working " with computers but you expect nothing less than perfect from health care professionals.
Is it on, is it plugged in?!!
Slightly more complicated!

Doctors are people, and half of them graduate in the bottom half of their classes.

Well guess what, doctors can have a detrimental long term impact on people's lives in a profound way, and I experienced this firsthand, and my dad. There are countless people who lose so much when doctors make grievous errors, and it's heartbreaking. From women misdiagnosed with breast cancer and given full mastectomies, to people's symptoms being brushed off as nothing, and later dying or being debilitated because they weren't taken seriously and properly assessed, and treated. I don't trust medical professionals much, and believe in advocating for yourself until you are heard due to my experiences and of others because it could save your life. Take a person experiencing headaches, and suddenly fainting only to discover later it was a brain tumor. Doctors must do their due diligence when people's lives hang in the balance.

Everyone makes mistakes and it it unrealistic to assume otherwise. Especially while working long exhausting shifts deprived of sleep or breaks to eat and get s shred of rest.

I do my very best for all my patients, and would never harm someone intentionally in any way, but I can not truthfully tell you I haven't made errors, the majority of them minor and without consequence to the person.

Its easy for laypeople to point fingers and blame when they don't understand the system, the process of diagnosing and treating medical conditions, and knowledge of these conditions above what wikipedia and infinite misinformed blogs offer.

Instead, maybe take a moment to be grateful for the quality free treatment that is our right as Canadians.