Building during bear markets means shipping Ethereum upgrades when gas fees collapse to pennies, launching Solana validators when hardware costs crater, and writing code that nobody's watching yet. 2018-2019 saw teams like Consensys and Paradigm hire aggressively while others fled; those hires became the infrastructure layer that scaled 2020-2021. The real builders aren't timing the bottom—they're indifferent to price because they're solving problems that won't matter until the next cycle.