2) What is Blockchain?A blockchain is a distributed digital ledger that allows for the secure storage of data. By recording any kind of information—such as bank account transactions, the ownership of Non-Fungible Tokens (NFTs), or Decentralized Finance (DeFi) smart contracts—in one place, and distributing it to many different computers, blockchains ensure that data can’t be manipulated without everyone in the system being aware.
倪學仁指出，這次大火涉及多座大廈，情況更為複雜。個別單位狀況不同，亦無法僅稱樓宇已損毀，便可直接拆卸而不用處理後續程序。「假設你的汽車出事了，是想要total loss（全部損毀），但你也需要保險公司同意才行。」他估算，若政府統一回購業權，可以有助加快與保險公司的溝通。
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"You could see this was something game-changing for Emperor penguins. Suddenly you're thinking, well, have we got time to save them?" he says.
If free_table[bucket] contains a value, we can pop a value off.