下游的优势在于市场想象空间巨大，估值弹性高，一旦实现技术突破，有望获得垄断性收益。但风险远高于上下游：盈利周期极长，预计要到2030年才能实现现金流转正；技术路线失败率高，类似Meta元宇宙投入效果不佳的案例并不少见；且资本依赖性极强，一旦融资环境恶化，将直接冲击企业生存。
2009 年，张清森在一家外贸公司做业务员，但奈何工资太低，老板也抠，日子过得难受。
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That is, in itself, not unusual for a child of the 1980s. However, whereas most regular match-goers might take for granted the seemingly small things – travel arrangements, the journey to the stadium, grabbing food and drink, meeting friends and family, entering and exiting the ground – for disabled supporters such as Clements, careful thought and planning go into all arrangements.
4. Are experts talking about it? There is always two sides to a story, and it’s important to see if anyone else is discussing it and putting their trusted opinion forward.
Less than: Every domino half in this space must add up to less than the number.