returns immediately, no coordinate reads at all. Same for east and
err(msg) = println(f"error: {msg}"),
，这一点在钉钉下载中也有详细论述
莱恩进一步说明：“研究表明，催产素能减轻炎症反应、保护神经细胞、增强免疫功能、促进骨骼发育，并能缓解社交场合的压力。”
Those log entries can be observed by
if (nub-attach(this))
return shared.base_value() + 1;