Antonyms for the phrase "thinks through" may include "dismisses," "neglects," or "ignores." When a person doesn't think through a situation, they may be acting on impulse or intuition, rather than taking the time to consider all angles and potential outcomes. By neglecting to think through a decision, one can make mistakes or miss opportunities that could have arisen with careful consideration. Some may argue that thinking through everything can be detrimental, leading to overthinking and anxiety. However, it's important to strike a balance and weigh the potential consequences of our actions before making a decision.