The category rule should set the condition to `false` if the condition is not `true`. ipcmedia/keystone#202
If tag conditions are not `true` they should be `false`. ipcmedia/keystone#202
If the author conditions are not `true` they should be `false`. ipcmedia/keystone#202
No point filtering if the condition is already false, we don't want someone to make it true again. ipcmedia/keystone#202