user35765: What happens if segregated witness never reaches the 95% adoption threshold from miners? Will it still take effect for those transactions where the miners have adopted it?

user5406: By current agreement Segregated Witness will only activate after it reaches 95% of the miners signaling readiness. 
Sending Segregated Witness transactions before that would be foolish, as if they were to be included in a block, anyone would be able to spend the outputs before Segregated Witness is enforced. They are however, non-standard to current versions of Bitcoin Core.
If the 95% threshold is not achieved for an extended period of time, there might be a proposal to lower the threshold.

35765: <p>What happens if segregated witness never reaches the 95% adoption threshold from miners? Will it still take effect for those transactions where the miners have adopted it?</p>
 5406: <p>By current agreement Segregated Witness will only activate after it reaches 95% of the miners signaling readiness. </p>

<p>Sending Segregated Witness transactions before that would be foolish, as if they were to be included in a block, anyone would be able to spend the outputs before Segregated Witness is enforced. They are however, non-standard to current versions of Bitcoin Core.</p>

<p>If the 95% threshold is not achieved for an extended period of time, there might be a proposal to lower the threshold.</p>
