3. In a step toward molecular storage systems to hold vast amounts of data in tiny ...

In a step toward molecular storage systems to hold vast amounts of data in tiny spaces, researchers store image files in solutions of common biological small molecules, and read the information back out again, which can have even greater information density than DNA, in a new proof-of-concept study.

Either I'm missing something or the authors are waaaaaaay overstating their claim of "greater information density than DNA". They store the entire image not in one small microliter sized well (like DNA could), but in many wells in an array where the position in the array matters. Also they use the absence of certain biological molecules to code for the 1s and 0s which the authors admit can react with each other. They say this is a good thing because it could do computation somehow... I have a lot of issues with the authors' claims:.
1. This is waaay less information dense than DNA.
2. Also there's no redundancy in their system which you can have with DNA by putting as many copies of your data together in only one small microliter sized volume.
3. This system can not make copies of itself like DNA easily can.
4. They say these molecules can do computation by reacting with each other. I seriously doubt in it's current form you could do computation. Using their approach of coding 1s and 0s to a missing molecule they would need molecules which react with each other in a way that they can convert any of one molecule to another in the set to change the coded 1s and 0s.
3a. We can basically do computation with DNA although not in vitro yet. it is theoretically possible using multiple CRISPRS and other enzymes to do computation and maintain the redundancy and integrity of the new data.

I like their idea trying non DNA chemicals, but the format they used does not seem to be better than DNA in any way that I can see and it does not succeed in passing any of their claims over DNA at this time.

If there's something I'm missing in this article let me know. I'm gonna read the actual paper after posting this. Also on mobile sorry if formatting is crap.

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