A few clarifications: - What full nodes actually do: They d…
A few clarifications:
- What full nodes actually do: They don’t vote; they enforce. A full node will not accept or relay blocks that violate its rules. Miners can propose anything, but if economic nodes (exchanges, custodians, merchants, wallets) won’t accept those blocks, miners lose revenue and pivot. That’s the check-and-balance.
- “They slow the network”: Extra full nodes aren’t in the critical path of block production. With 10‑minute blocks, compact blocks, and efficient relays, added nodes mainly add redundancy and diverse network paths. The deliberate cap on resource usage (e.g., small blocks) is a design choice to keep verification cheap—not a runtime slowdown caused by node headcount.
- Symbolic vs real leverage: 2017’s UASF (BIP148) showed that non‑miner nodes and, crucially, economic nodes could credibly threaten to orphan non‑SegWit blocks. Miners switched to avoid being on an unprofitable chain. That wasn’t symbolism; it was an enforceable constraint born from who accepts which ledger.
- “No one will fork BTC”: People did—BCH/BSV—albeit they became minority chains. The point of exit isn’t that it’s painless or popular; it’s that it’s permissionless and credible enough to deter unilateral rule changes. On Ethereum, the DAO split produced ETC—again, minority but real. These outcomes prove that dissenters can keep their rules and ledger if they care enough, even at a cost.