very hard to estimate. at least for me. i must admit that part of the delay is due to new ideas that don't stop coming. a recent one was to convert your theory to a wiki, so you could browse the encyclopedia of your own worldview. or let others browse it. (or compare it with another one's, for the sake of partnership, or dating, or common interest.. but that's an old idea, the new idea is the wiki format). and obv most of the time i think of the math aspects of this all which are nontrivial. especially how to write a scalable solver
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Ohad- the flow of new ideas for innovative creators such as your self will never stop. However, there is a time that one has to stop, and move on to CONCRETE progress with what you already have, and advance it, finish an alpha, a  beta, and then continue to improve.

Moving from the ZENNET to TAU 1 and now to TAU 2 over several years WITHOUT anything concrete doesn't help confidence. The fact that HMC also didnt survive here, and that you guys had to part arguing, and that you are back at square 1 (new whitepaper) is nice if this was a University research lab, but not as nice for a start up effort.

Raising hundreds of BTC's creates a commitment to investors and to the community. If you continue with theoretically responding to "new flow of ideas" it can last for 25 more years because ideas will likely not stop.

Time to create a timeline that will commit you, show a concrete plan, real milestones, roadmap etc, to create more credibility for your ability to actually execute and not just theorize. I write this with respect and appreciation and hope that such will be included in the whitepaper and presentation.