Even considering recent research findings, neuroimaging is still inadequately understood. Additional medical factors like age, medication history, diet, and endocrine function need to be considered when viewing an fMRI image, and the sensitivity of the scanner needs to be considered as well. If the person being scanned is moving or inaccurately completing assigned tasks, the images produced will be invalid. Other critics highlight that the image derived from the technology does not display the brain's intentionality. Functional neuroimaging was not intended to calculate volition, and while it may offer insight into the processes that cause behavior, it is debated whether or not the images can objectively narrow in on human reasoning and specific thought processes. These factors make neuroimaging results hard to assess precisely, which is why there is hesitation towards presenting them in court cases.