在陆铭看来，正是由于未来产业的投资回报具有较大不确定性，如果完全按照市场机制，让私人部门投资，可能存在巨大的外部性——没有收益，或者因为投资规模太大，导致私人部门缺乏投资来源，因此，政府参与显得尤为必要。“但是投的时候，还要对市场发展的前景以及存在的风险有充分认识。”陆铭说。
Pre-orders for the new iPad Air M4 open on Wednesday, March 4, and the tablet will be fully available on March 11. As before, pricing starts at $599 for the 11-inch model and $799 for a 13-inch display.
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