Ask HN: What startup/technology is on your 'to watch' list?

I'd say my project Super Graph it's a GraphQL to SQL compiler in GO. It saves developers thousands of man-hours and 10x their productivity. 80% of web backend coding is struggling with ORMs, SQL and writing APIs. Super Graph does away with all that. A simple GraphQL queries get you the data you need.

https://github.com/dosco/super-graph

I took a quick look at Holochain and its got the regular set of better than bitcoin/ethereum claims that most alt coins say. Its saying its more efficient and safer to use than other blockchain languages. Now these are really big claims so let's see what its got!

Looking at https://holochain.org/ , most of my scam senses are not going off tooo much. Its got some weird testimonials and then a white paper! So far so good.

Ok, lets skip to the white paper. Now what I'm looking for here is mainly how do you verify computations are valid amidst BFT and sybil attacks.

So its got some stuff about how every message received can be verified by the receiver by using "validation rules". Okay... so we can use custom validation rules that each receiver can define and run themselves. Fine, one such rule could be Bitcoins proof of work.

So it can be as expensive as Bitcoin. Now of course there can be other rules that are less expensive of Bitcoin, but theres a big reason Bitcoin's PoW is so expensive... Its been battle tested and looked at by 1000s of people to verify that its correct and can resist just about anything up to a 51% bad node attack. Allowing any program to define its own set of validation rules in the hopes that they will be faster doesn't make things safer. It just makes it more likely for fails. This looks like the major contribution that Holochain is trying to make. Let everyone write their own proof of work functions that suits their needs and mess it up. The number of ethereum dapps that failed to write safe contract is proof enough that this will happen in an identical fashion.

Did I miss something? Maybe there really is something here thats new, but I'm not seeing it at first glance. Its doesn't look a scam though so its got that going for it

I don't think it's attacks we need to worry about (there's even an XKCD about dropping rocks off of overpasses). The issue is that without good depth and velocity data (so probably LiDAR) there are lots of fairly common situations that an ML algorithm is likely to have trouble making sense of.

Nix—It takes buy-in, but very worth it for us. Builds are reliable, reproducible, can exist alongside one another. Plug an S3 powered CloudFront cache into it, and you’re never building the same thing more than once.

Deno—Sandboxed by default seems a powerful way to offer our customers to run custom code. Native TypeScript, build single bins. I have still to play around with it but those all seem like compelling advantages over Node.js

Considering that Tiddlywiki has around 4 plugins that are supposed to make it more like Roam, I’d say that probably Roam isn’t just like TiddlyWiki.

Now, I’m not a TW user, but I think things like block references, outliner features, and bi-directional linking aren’t there by default.