Mind wandering is typically operationalized as task-unrelated thought. Some argue for the need to distinguish between unintentional and intentional mind wandering, where an agent voluntarily shifts attention from task-related to task-unrelated thoughts. We reveal an inconsistency between the standard, task-unrelated thought definition of mind wandering and the occurrence of intentional mind wandering (together with plausible assumptions about tasks and intentions). This suggests that either the standard definition of mind wandering should be rejected or that intentional mind wandering is an incoherent category. Solving this puzzle is critical for advancing theoretical frameworks of mind wandering.

中文翻译：

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心能有意识地游走吗？

思维游荡通常被操作为与任务无关的思想。一些人认为需要区分无意和有意的走神，代理人自愿将注意力从与任务相关的想法转移到与任务无关的想法。我们揭示了走神的标准、与任务无关的思想定义与故意走神（以及关于任务和意图的合理假设）之间的不一致。这表明要么应该拒绝走神的标准定义，要么故意走神是一个不连贯的类别。解决这个难题对于推进思想游荡的理论框架至关重要。