{"action":"created","comment":{"url":"https://api.github.com/repos/MicrosoftDocs/quantum-docs-pr/pulls/comments/190738137","pull_request_review_id":123181573,"id":190738137,"diff_hunk":"@@ -15,67 +15,79 @@ ms.topic: article\n ---\n \n # The Qubit\n-Just as bits are the fundamental object of information in classical computing, *qubits* (quantum bits) are the fundamental object of information in quantum computing.  To understand this correspondence, let's look at the simplest example: a single qubit. \n+Just as bits are the fundamental object of information in classical computing, [*qubits*](https://en.wikipedia.org/wiki/Qubit) (quantum bits) are the fundamental object of information in quantum computing.  To understand this correspondence, let's look at the simplest example: a single qubit.\n \n-## Representing a Qubit ##\n+## Representing a Qubit\n+\n+While a bit, or binary digit, can have value either $0$ or $1$, a qubit can have a value that is either of these or [a quantum superposition](https://en.wikipedia.org/wiki/Quantum_superposition) of $0$ and $1$. Quantum superposition is the phenomenon where a quantum object can exist across all of its possible states simultaneously. Superposed states are continuous, unlike the discrete classical states $0$ and $1$. When we observe (measure) a qubit in superposition, we collapse its state and are left with only one of our classical states $0$ or $1$.","path":"articles/quantum-concepts-4-Qubit.md","position":23,"original_position":23,"commit_id":"d99f86a513324522a7c3b072c26510bd17bd8cc2","original_commit_id":"d99f86a513324522a7c3b072c26510bd17bd8cc2","user":{"login":"tcNickolas","id":10113024,"avatar_url":"https://avatars2.githubusercontent.com/u/10113024?v=4","gravatar_id":"","url":"https://api.github.com/users/tcNickolas","html_url":"https://github.com/tcNickolas","followers_url":"https://api.github.com/users/tcNickolas/followers","following_url":"https://api.github.com/users/tcNickolas/following{/other_user}","gists_url":"https://api.github.com/users/tcNickolas/gists{/gist_id}","starred_url":"https://api.github.com/users/tcNickolas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tcNickolas/subscriptions","organizations_url":"https://api.github.com/users/tcNickolas/orgs","repos_url":"https://api.github.com/users/tcNickolas/repos","events_url":"https://api.github.com/users/tcNickolas/events{/privacy}","received_events_url":"https://api.github.com/users/tcNickolas/received_events","type":"User","site_admin":false},"body":"I'm not sure the addition here is entirely accurate. Quantum object doesn't exist in all possible states simultaneously, it exists in one specific state which is neither 0 nor 1. And measurement result depends on the basis in which we perform the measurement, but also the result of the collapse is still a quantum state (I remember somebody was confused about how can we apply gates to qubit after measurement if it collapsed to a classical bit). I would keep this paragraph as it was.\r\n@cgranade what do you 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