Arcade City Uses Ethereum to Decentralize Taxi, Delivery and Roadside Assistance

[mining1]

I agree with what this guy says.Im not a programmer but tpb is all about noise.Its so obvious he has his own reasons to FUD.He's saying that ethereum is flawed like thats news,every blockchain there is,is flawed.But some,more than others,will perform better eventually and overcome their flaws.He keeps saying eth is broken but he admitted its problems are solvable,yet he keeps goin on.

[smooth]

Do you vouch for him? I certainly don't. I've stated two things previously in other posts:

I don't know him personally but his posts are generally an accurate technical analysis. Like everyone else he occasionally gets things wrong, but more right than wrong (and usually corrects his errors later -- we are all learning about this stuff after all). I've seen nothing to suggest you have any idea what you are talking about. Maybe you do, but I haven't seen it.

[TPTB_need_war]

Re: Arcade City Uses Ethereum to Decentralize Taxi, Delivery and Roadside Assistance

http://allcoinsnews.com/2016/03/14/arcade-city-uses-ethereum-to-decentralize-taxi-delivery-and-roadside-assistance-services-and-launches-mobile-app/

There is no way for a smart contract to form an objective consensus about events that occur external to a block chain.

All voting is a power vacuum that fails due to the Iron Law of Political Economics.

This press release is bullshit with no adoption and is merely to sell more ETH tokens to fools.

Augur and Slock.it and 99% of the apps/contracts announced for Ethereum are so flawed they can never work.

Furthermore, ArcadeCity does not use ETH for payment. Cash, credit card, debit, and Paypal are accepted.

The Ethereum integration is primarily to sell tokens to drivers, i.e. a way to do public offering (let's hope they comply with SEC regulations):

Arcade City will use Ethereum to issue ‘crypto-equity’ to drivers, allowing them to own up to 100% of the company by 2020.

It has nothing to do with using Ethereum to enable some new technology that improves upon Uber. It is about governance and creating a copycoin P&D in the Uber space.

More information:

http://cointelegraph.com/news/arcade-city-decentralized-blockchain-based-answer-to-ubera

They could use a block chain for drivers to sign a record of the price they are offering, and for riders to sign records giving reviews of the drivers, i.e. a decentralized database that verifies the signers so that reputation can't be faked.

But reputation can be Sybil attacked, unless a resource must be consumed in order to establish a reputation.

Payments from riders to drivers on the block chain would not be a consumed resource, because drivers could pay themselves from fake rider accounts. Proof-of-stake does not consume a resource and thus it has attack vectors.

The solution is for riders to form a Web of Trust, where they trust friends and friends-of-friends and this reputation is the only reputation they trust.

But none of this needs atomic Smart Contracts. All we need is a way to sign hashes on the block chain and keep the data on a DHT. Which is I think the correct design for a 2.0 block chain.

[YarkoL]

In the case of this, the driver and the passenger could collude to input "fake" information into the system, perhaps so that the driver gets more tokens or whatever.  There is no way for the system to check, irrefutably, that the journey really was say 20 miles in distance, it could all be fake.

Even if you put a "black box" in the cab, you still cant ever be 100% sure that it wasn't tampered with, and so due to that uncertainly, the consensus can never be totally reliable.

Makes me wonder if the driver on the move could prove her position at
intervals to all the other participants on the network in a non-fakeable
way, like using triangulation of a radio signal

...although passenger might not be OK with that...

[TPTB_need_war]

In the case of this, the driver and the passenger could collude to input "fake" information into the system, perhaps so that the driver gets more tokens or whatever.  There is no way for the system to check, irrefutably, that the journey really was say 20 miles in distance, it could all be fake.

Even if you put a "black box" in the cab, you still cant ever be 100% sure that it wasn't tampered with, and so due to that uncertainly, the consensus can never be totally reliable.

Makes me wonder if the driver on the move could prove her position at
intervals to all the other participants on the network in a non-fakeable
way, like using triangulation of a radio signal

You are still trusting the provider of the triangulation sites. This is thus still centralization. There is no way for the block chain to be objective about that, unless it is merely recording data trusted providers have signed.

There is nothing wrong with using a block chain to record driver signed updates on their position. Thus trust is based on reputation.

But you don't need atomic Smart Contracts (Dapp Koolaid) for that. Each user can run a program on their client (which doesn't need to be atomic with the block chain) to read the data on the block chain and interpret (according to the reputation that user trusts).