fixing bft information

Signed-off-by: Sara <lira.lemur@gmail.com>
hyperledger · Sep 18, 2019 · 744a67e · 744a67e
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diff --git a/README.md b/README.md
@@ -7,7 +7,7 @@
 [![Build Status](https://jenkins.soramitsu.co.jp/buildStatus/icon?job=iroha/iroha-hyperledger/master)](https://jenkins.soramitsu.co.jp/job/iroha/job/iroha-hyperledger/job/master/)
 
 Iroha is a straightforward distributed ledger technology (DLT), inspired by Japanese Kaizen principle — eliminate excessiveness (muri). 
-Iroha has essential functionality for your asset, information and identity management needs, at the same time being an efficient and trustworthy byzantine fault-tolerant tool for your enterprise needs. 
+Iroha has essential functionality for your asset, information and identity management needs, at the same time being an efficient and trustworthy crash fault-tolerant tool for your enterprise needs. 
 
 Check the [overview](http://iroha.readthedocs.io/en/latest/overview.html) page of our documentation.
 [Here](https://www.youtube.com/channel/UCYlK9OrZo9hvNYFuf0vrwww) is a YouTube channel where we upload meetings and explanatory videos - check them out! 
@@ -23,7 +23,7 @@ Iroha has the following features:
 5. Validation of business rules for transactions and queries in the system
 6. Multisignature transactions
 
-Iroha is _Byzantine Fault Tolerant_ and has its own consensus algorithm - [YAC](https://arxiv.org/pdf/1809.00554.pdf) 
+Iroha is _Crash Fault Tolerant_ and has its own consensus algorithm - [YAC](https://arxiv.org/pdf/1809.00554.pdf) 
 
 ## Documentation
 

diff --git a/docs/source/before_start/architecture.rst b/docs/source/before_start/architecture.rst
@@ -82,7 +82,7 @@ Iroha uses own consensus algorithm called Yet Another Consensus (aka YAC).
 
 You can check out a video with a thorough explanation of the principles of consensus and YAC in particular `here <https://youtu.be/mzuAbalxOKo>`__.
 
-Distinctive features of YAC algorithm are its scalability, performance and `Byzantine fault tolerance <https://en.wikipedia.org/wiki/Byzantine_fault_tolerance>`_.
+Distinctive features of YAC algorithm are its scalability, performance and Crash fault tolerance.
 
 To ensure consistency in the network, if there are missing blocks, they will be downloaded from another peer via `Synchronizer <#synchronizer>`__.
 Committed blocks are stored in `Ametsuchi <#ametsuchi>`__ block storage.

diff --git a/docs/source/index.rst b/docs/source/index.rst
@@ -4,7 +4,7 @@ Hyperledger Iroha documentation
 
 .. image:: ../image_assets/iroha_logo.png
 
-Welcome! Hyperledger Iroha is a simple blockchain platform you can use to make trusted, secure, and fast applications by bringing the power of permission-based blockchain with Byzantine fault-tolerant consensus. It's free, open-source, and works on Linux and Mac OS, with a variety of mobile and desktop libraries.
+Welcome! Hyperledger Iroha is a simple blockchain platform you can use to make trusted, secure, and fast applications by bringing the power of permission-based blockchain with Crash fault-tolerant consensus. It's free, open-source, and works on Linux and Mac OS, with a variety of mobile and desktop libraries.
 
 You can download the source code of Hyperledger Iroha and latest releases from `GitHub page <https://github.com/hyperledger/iroha>`_.
 

diff --git a/docs/source/overview.rst b/docs/source/overview.rst
@@ -40,8 +40,7 @@ This negates the need to write cumbersome and hard to test smart contracts, enab
 How is it different from the rest of Hyperledger frameworks or other permissioned blockchains?
 ----------------------------------------------------------------------------------------------
 
-Iroha has a novel, Byzantine fault tolerant consensus algorithm (called YAC [#f1]_) that is high-performance and allows for finality of transactions with low latency.
-Other frameworks either focus more on probabilistic consensus algorithms, such as Nakamoto Consensus, or sacrifice Byzantine fault tolerance.
+Iroha has a novel, Crash fault tolerant consensus algorithm (called YAC [#f1]_) that is high-performance and allows for finality of transactions with low latency.
 
 Also, Iroha's built-in commands are a major benefit compared to other platforms, since it is very simple to do common tasks such as create digital assets, register accounts, and transfer assets between accounts.
 Moreover, it narrows the attack vector, improving overall security of the system, as there are less things to fail.