Majority Attack – Robustness of Bitcoin

I wonder about the consequences of a possible 51% CPU attack on the Bitcoin blockchain. Imagine that a state invests enough processing power to rewrite an entire blockchain that is longer than the current bitcoin blockchain (possibly because the state wants to control money). In this fake blockade, all blocks would be empty (no transactions), meaning that the state has all bitcoins as a result of mining.

Would it really be the end of Bitcoin in this case? It seems to me that it would be easy to patch the nodes in the network to discard the fake blockchain, for example by blocking the public key of the state.

This would violate Bitcoin's intention that math and cryptography replace trust in a third party, but ultimately Bitcoin is used by people who need to trust it. They would not want their entire money to be destroyed by an attack.

Or is 51% harder to detect and repair? I'm not asking about short-chain attacks that would rob only some traders, but about the global stability of Bitcoin.

Why can non-whites not understand that the majority of whites hate them? We do not want blacks or Mexicans in America?

No, if you do not like her because of her race, it's because you're racist. There is no racist or not. And many Americans do not feel that way at all.

What if America somehow gets destroyed and you have to move to Africa or Mexico? And remember, our ancestors brought the ancestors of most American blacks to America. So blame your great-great-grandfather if you do not like it.


How can Bitcoin protect against a "stupid majority fork"?

Suppose a majority of miners use software that prohibits timeouts. This would be a softfork, so the blockchain for nodes using the previous software will still be valid. However, nodes that defer blocks with a time delay are orphaned by the mining majority of the network and outperform all chains that contain timelocks. No chain that contains timeouts could grow, and existing nodes would treat the chain with new rules as the only true chain.

How can users / miners who want to retain the use of time locks recover in this situation?

How is Medicare For All going to change anything for the majority of Americans who are now insured by work?

Obama wanted to make a 'public option' part of Obamacare. Under this option, we would find the average cost per patient of Medicare and allow someone to voluntarily 'buy in'.

For me that was the best idea. If Medicare could do a better job, people would go there and private insurance would lose them. If Medicare sucked, people would voluntarily leave and return to private, commercial, for-profit insurance. No public expenses. Freedom of choice. Free market competition! Exactly what the Republicans said they wanted! Why did you kill it then? (As Medicare did not provide massive political sponsorship, the public option was cheaper!)

I am not sure that the proposal "Medicare for All" is really just a reinstatement of the option "Pubic" or a mandatory transfer of all to Medicare. It could be either one.

Do you know Medicare has a much higher customer satisfaction rating than commercial insurance?


Majority Attack – When there are 20 nodes in the network and all transactions are received and after 10 minutes

Question 1) If there are 20 nodes on the network and all receive a transaction and after 10 minutes select all transactions from their transaction pool and start blocking, all nodes now use the same transactions to create the block, or each node can have a different one Transaction have in this particular block

Question 2) If there are 20 nodes in the network and all blocks are created, what happens if several nodes create the block at the same time?

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Replication – Automate the setting of the secondary node to the primary node when the majority of nodes are removed from MongoDB

There are many ways to force a secondary node to a primary node if the majority of nodes in the Mongo replica set have failed. But we have to do it manually. Reconfigure for enforcing:
cfg = rs.conf ();
cfg.members = [cfg.members[1]];
rs.reconfig (cfg, {force: true});
How can we automate this task to run in the background to check the heartbeat and automatically promote the secondary level primary.

Freelancers vs. App Development Agency

The two main types of vendors that can create an app for you are freelancers and companies. Although none of these options are bad, there is still a better choice between the two. It all depends on the project and your expectations. Let us analyze freelancers and agencies more intensively. The customer always strives to know the average cost of app development

If you decide to develop a mobile app with freelancers, you get the following benefits:
• Flexible working hours of freelancers
• Quality of services
• The search for freelancers for all necessary services
• Limited accountability and transparency
• Team Management
• Cheap app development
• Only constant communication with the developer

If you choose freelancers to develop an app, you pay less. However, this means more often that you receive lower quality work. It can also be very impractical to succeed as a freelance vendor because, as with multiple services, you have several different people working on your project, each with their own understanding, schedule, and communication skills.
When you develop an app with freelancers, you'll probably skip signing large contracts, signing up, receiving invoices, and many other paperwork. However, this requires less responsibility and creates more room for deadlines and problems with quality.

If you want to work with an app development company, you benefit from the following benefits:

• Disadvantages of working with companies that create mobile apps:
• Higher rates
• More bureaucracy
• Trusted relationships
• Quality of the results
• Project Management
• Accountability
• All or most of the services you want in one place
• Schedule and discipline
As you spend more money and manage more printed material, most application support organizations suspect that everything is good and good and that the costs are worthy of security. In most cases, the offices have a wide range of experts covering the entire improvement cycle and encouraging the managing authorities to sort out the correspondence and ensure a straightforward and cheap transport.