Also read what happened when they rushed the Zika virus vaccine in 3 years.
en.m.wikipedia.org
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I'm all for a safe and effective vaccine, I just know that to make it safe it takes a long time.
This isn't the zika vaccine, it's an mRNA vaccine, perhaps you should find out how it actually works? Also the progress in biology and genetic technology has improved vastly in the past decade, indeed it is a fast moving field where progress in understanding happens weekly. It is a global enterprise involving millions of scientists from a variety of subspecialties all connected by the internet, so progress is very fast. The trial times for vaccines has been shortened in general and will continue to, especially for the mRNA vaccines, since most future vaccines will be based on this technology. They hit it out of the ball park with this vaccine in terms of efficacy and safety and will continue to do so with future ones.
An mRNA strand can only produce the protein it is programed for and nothing else, the strand is encapsulated in a stabilizing fat bubble and is absorbed into muscle tissue where it uses the cells resources to assemble the spike protein your immune system becomes trained to recognize. Your genetic code is read in triplet chucks and transcribed into mRNA that leaves the cell nucleus and assembles the proteins you need to survive every second of every day you are alive. Your DNA is not just a copy of you, it is a biochemical database your cells use all the time and mRNA is how that database is read, mRNA creates proteins from a combination of 20 some amino acids floating around in your cells cytoplasm using ribosomes to do the assembly in a process called translation.
You don't take the vaccine just for yourself, you take it to protect others too, it might require caring about them to take the risk, minimal though it might be. Trudeau will roll up his sleeve on national TV as will all other government officials, if a politician has the guts to do it, so do I, since I consider my self to be a better human being than many of them.