The question of whether ISTPs lack empathy is a complex one, as it depends on various factors and individual differences. ISTP is one of the 16 Myers-Briggs Type Indicator (MBTI) personality types, and it stands for Introverted, Sensing, Thinking, and Perceiving.

Empathy is the ability to understand and share the feelings of others, and it involves both cognitive and affective components. While it is true that ISTPs may not naturally prioritize emotional expression or interpersonal connections, it does not necessarily mean they lack empathy altogether. Here are a few points to consider:

1. Cognitive empathy: ISTPs tend to have a strong logical and analytical mindset. They excel at understanding complex systems and mechanics, which can extend to understanding the thoughts and perspectives of others. They may be able to put themselves in someone else's shoes and intellectually grasp their emotions or experiences.

2. Affective empathy: ISTPs may struggle more with affective empathy, which involves emotionally resonating with others. They may find it challenging to express or connect with their own emotions, which can make it difficult to fully understand or share the emotions of others. However, this does not mean they are completely devoid of empathy. They may still care about others' well-being and be willing to help when needed, even if they struggle to emotionally connect.

3. Individual differences: It is important to remember that personality types are just general frameworks, and individuals within each type can vary greatly. Some ISTPs may naturally possess higher levels of empathy, while others may need to consciously work on developing and expressing it. Factors such as upbringing, life experiences, and personal growth can also influence an ISTP's empathy levels.

4. Communication style: ISTPs tend to be more reserved and private individuals, preferring to focus on practical matters rather than emotional discussions. This can sometimes give the impression that they lack empathy, as they may not express emotions or offer comforting words in the same way as more emotionally expressive types. However, it is essential to recognize that empathy can be expressed in various ways, and ISTPs may show it through actions rather than words.

In conclusion, while ISTPs may not naturally prioritize emotional expression or interpersonal connections, it does not mean they lack empathy. They may struggle more with affective empathy but can still understand and care about others' feelings on a cognitive level. Individual differences and personal growth also play a significant role in an ISTP's ability to empathize with others.