Where does the 33.33% threshold for selfish mining come from?

The increase in stale blocks from 1 per 1300 to 1 per 1000 over the past four months has been noted as a concern within the programming community. This trend, although not yet statistically significant, suggests that there may be issues with knots leading to inconsistencies in meme pool views and subsequently slowing down the block relay process. The observation aligns with prevailing theories that network inefficiencies are being exacerbated by current system configurations or limitations inherent in the knot technology. This development calls for a deeper investigation into how knots are influencing block propagation times and the overall stability of the network. Enhanced scrutiny could reveal underlying problems that, if addressed, might improve the efficiency of block relays and reduce the occurrence of stale blocks, thereby optimizing network performance.