Imagine every time you needed to troubleshoot something in a computer, you had to break out the multimeter. But the multimeter only works for one specific thing, which is an indirect measurement of the phenomena you’re actually interested in and trying to troubleshoot. Also the multimeter has some serious flaws and biases that make it seem like it’s working, but everything you get out of it is wrong and leads you to misinterpreting your results. That’s what its like to do biology.
A lot of innovation and progress is made when new tools to probe what’s going on in biology are invented. For example, cell viability assays used to be conducted by literally counting the number of live cells vs dead cells. Now, you can use a photometric test that’s extremely easy and takes a lot of guesswork out of the assay and makes it routine.
Researchers fundamentally need more of those types of assays to make life easier. And that’s where the dream and the profit people in biotech are chasing after.