In the vacuum of space, the amount of debris—spent rocket stages, splintered satellites, micrometeoroids—numbers in the millions, all zooming about, often at 17,000 mph speeds. They’re also constantly hitting each other in a tsuris of exponential littering. Most of these pieces are tiny, and many are not anywhere near the altitude of the ISS. But the area isn’t completely clean.
与传统一次性售卖软件不同，SaaS 更像是“长期收租”，其估值更依赖客户数量、用户黏性和营业收入等指标，因此头部 SaaS 企业长期被视为增长稳定、收入可观的投资标的。，推荐阅读新收录的资料获取更多信息
Because this is regular Smalltalk code, all standard development tools work out of the box: syntax highlighting, code completion, navigation, and refactorings:。业内人士推荐新收录的资料作为进阶阅读
For the record, running this experiment turned my supervisor's desktop into a space heater for ca 40 days, and may or may not have at some point crashed it. I'm very popular at my lab.