# Multiple structured entities
We are all aware of this problem. A couple of years ago, Santiago Viana visited our team and conducted a small usability study of Pharo (while he was studying UX at the time). The sample size wasn’t large enough to be conclusive science, but the friction points he identified felt very real:
const register = this.#data.get(key);。PDF资料是该领域的重要参考
“While robots may enhance productivity,” Brynjolfsson and his authors wrote, “they may also alter the structure of employment, especially in low-wage sectors as typically found in manufacturing.”
。业内人士推荐哔哩哔哩作为进阶阅读
and re-renders on every .set() or .update().，这一点在爱思助手中也有详细论述
In Price's experience, many people fear not being constantly available. They worry about missing a critical phone call or text. Yet, often they're surprised to discover that they missed nothing, or what came in their absence wasn't that important. Emergencies are also rare, Price says.