Hello, I just learned something about DeFi, I would like to know your opinion about that. I am talking about MakerDao or Synthetix for example.
It is really 100% safe as it claims? It should be protected by smart-contract, but who knows if it is 100% without a bug? The problem is that you can´t reverse the tranaction when it happens and investors will loose their money. It looks like a good alternative how to leverage or hedge your position.I think that now it is the best time to learn something about it because you can easily grow your portfolio thanks to secured loans (it is not so likely that the Ethereum will fall by more than 50% to endanger your leverage position). Those who do not know anything about it, here is a good example: you can lock for example 1000USD in ETH to the DeFi smart contract and you will get loan worth 500USD (in Dai tokens), you buy more Ethereum and when price goes up, you will need to pay only 500USD to unlock your Ethers.
Also there were some DeFis that didn´t survive for example NuBits. Do you know about others one successful or unsuccessful?
You never know 100% if there isn't any bugs in a system unless you actually do your own audit. However, to do this, you will need to be able to understand how the smart contract operates (including all of the functions it can call to in other smart contracts).
Therefore, unless you understand all the programming languages used by the smart contracts, you'll need to rely on third party audits.
With that said, exploits have been discovered in DeFi projects in the past, including the infamous DAO hack that occurred a few years ago. Therefore, although it's less risky than using centralized platforms, some small risk will always exist.