Not sure what the point was you were going to make, but the mRNA technology is a big step in the direction of being able to address medical problems like writing a software. For a long time, pharmaceuticals were create in a trial and error process. It took science a long time to be able to reliably predict the outcome of chemical reactions, if we are talking about complex organic chemistry. I was working a very little bit on that in the mid-90ies. One very naive program I implemented was trying to predict the toxidity of a random chemical by its formula. We have come far from that. But with the mRNA technology, they could design their vaccine on a computer, also the production of the mRNA is highly automatized, so no experimenting in how to create it.
Developing the mRNA technology was of course decades of research, but now it is ready to be used. It also helped, that the SARS-virus was very well researched, so like with software, it the vaccine wasn't created "from scratch". It used the knowledge already present about these viruses. This means, while you might not get a vaccine against a random virus in two days (no HIV vaccine available yet), adjusting the vaccine for slight variations of the SARS-cov-2 virus, should be a very quick process.
Developing the mRNA technology was of course decades of research, but now it is ready to be used. It also helped, that the SARS-virus was very well researched, so like with software, it the vaccine wasn't created "from scratch". It used the knowledge already present about these viruses. This means, while you might not get a vaccine against a random virus in two days (no HIV vaccine available yet), adjusting the vaccine for slight variations of the SARS-cov-2 virus, should be a very quick process.