orphaned.
If there are 33% cooperating miners, a new non-coop block has an 11% chance of being orphaned.
**Benefits**
* persistent disincentive to creating non-coop blocks
* no
risk of permanent chain split * miners free to create block types they prefer with chance they will be included * persisent cost to those enforcing coop blocks if support is low (risk
tl;dr If even a slight risk to miner a block could be dropped then a non-zero contribution is rational. Feather forking like this also fixes difficulty gaming.