Answers

@edicted wrote SPK Network: Liquidity Between Hive and L2 which brings up quite a few questions that don't appear to be answered. I encourage you to read it of course, but I'll quote anything I directly answer.

...they never seem to talk about how tokens can exit the liquidity pool.

This is really the pièce de résistance of building on Hive. In many ways it's applicable to all decentralized systems. There is no way to accumulate capital anywhere that exceeds the means of the collective that holds it. This includes Bitcoin, if work/means was suddenly cheap for one party... say the advent of a quantum solution for the Proof-of-Work... Bitcoin itself wouldn't be valuable.

The Service Infrastructure Pool couldn't be more aptly named, it literally is the source of the means of services in our ecosystem.

Above is an example of climbing formwork, which in many ways is how I think of the SIP. Let's imagine we're on a mission to build a building that never tops out. We have our building material that is stronger than steel, cryptographic truth, and should allow a properly designed building to rise to infinity. Every day the top floor of the building is going to be sold as it's built, it has the best view in the city, and it's real estate is at a premium. In fact it's worth exactly twice as much as the floor 730 floors down(2 years old). One of the hardest things to do is get the new building material into the forms from great heights.

To accomplish this the crane operators have counterweights that allow them to safely lift the capital to the "pool" of concrete at the top.

Like... does 1 Larynx = 1 Larnyx? Is the token fungible? Because we've also heard reports that it's a virtual mining solution in which old miner tokens become outdated and less effective. Again, to keep the system fungible and simple I assume that by "outdated miners" what will actually happen is that inflation/emissions will increase and more Larnyx tokens will be distributed every day, which is a good thing because if Larnyx was deflationary like the SPK governance token that wouldn't make for a very good liquidity solution.

The astute have pointed out that if Larynx, which serves also as the fungible counterweight doesn't appreciate evenly; that eventually we are likely to topple some portion of our infrastructure. To that end the counterweight (over collateralized multi-sig) is getting a portion of the daily pour as well. We have well defined equations for the balance needed, and the amount of larynx going to the multi-sig holders will provide incentives that won't overpay for the means they are providing. Much like Hive, these rewards will be closer to a per-block, instead of per-stake, payout. Thus keeping the token fungible, while depreciating it's efficiency, and having nearly no computational cost to the ecosystem.

It's not really a liquidity pool if we can't extract the "locked tokens" that they are always talking about.

Correct again. The form work/SIP here have a motive force. Broca. If LARYNX is what the building is made of, BROCA is the Electricity that's running through it. The inflows to the SIP will be mostly paid out the the Infrastructure Providers. You stored a file, the audit checked it out, you got a gold star(Broca Rewards)... The Hive that went into the pool that day will largely go evenly to the Broca Rewards.

Much like electricity, it has to provide meaningful work through powering a motor, or providing heat. Not short out and cause a fire.
This allows the building to continue to rise with out carrying an ever larger safe into the sky... that if never had outflow, would grow beyond the counter balance and topple the incentives.

Of course, the AMM(Automated Market Maker) that is the SIP will also be able to buy and sell on the DEX to keep the ecosystem fair and the tokens fungible.

Hive goes in, those that paid Hive will receive Larynx. If the price of the larynx that comes out is higher than whats on the DEX buy orders would be fulfilled until a balance is met, if it's lower, sell orders will be fulfilled until that balance is met. Hive does come out though, generally spread over the mining tokens that receive Broca.

SPK will be issued in much the same way. It however is the governance token that builds the Broca resource. It allows people through the use of Broca to direct the utilization of SPK Network storage. 3speak will be able to mint a contract, get first dibs on providing infrastructure and cleaning Broca from resource state to gold-star-earning-pizza-party state. SPK votes will determine how much Hive can be safely held on hand to provide this liquidity... the remainder going to pay for the bandwidth and hard drive space that is the network.

Some of the biggest improvements that could be made to the system as it's written now(granular) is to integrate the daily Larynx auction so that smooths down to real-time ... really providing that liquidity in a much better way; The pool being maintained for a few days(1 power down period). Of course, the tokenomics of SPK Network aren't the motive force of it's value... it's the services it will provide.

There are a lot of possible directions we've considered, and as Matt and Dan both stately eloquently... "we don't know." To that end, we're really working hard to provide actual value to the ecosystem through the test network that showcases decentralized file storage. Finding the pain points with that will inform further direction and development of the tokenomics.