“You should not sign contracts or make important deals during Mercury retrograde”

• Claim: You should not sign contracts or make important deals during Mercury retrograde
• Verdict: FALSE — no scientific evidence supports the influence of an astronomical phenomenon on legal or business decisions
• Evidence Level: L3 — multiple scientific studies found no statistically significant effect
• Key Anomaly: The astrological belief contradicts both astronomical reality (optical illusion) and empirical data on financial markets and business decisions
• 30-Second Check: Mercury retrograde is an optical illusion caused by differences in orbital speeds between Earth and Mercury. The planet does not physically reverse direction and cannot influence human decisions or technology

Steelman — What Proponents Claim

Astrological tradition associates periods of Mercury retrograde with disruptions in communication, technology, and decision-making. According to this belief system, Mercury symbolically governs information exchange, contracts, transportation, and electronic devices (S004).

Astrology proponents recommend avoiding the following activities during Mercury retrograde:

• Signing important contracts, especially those related to real estate and credit agreements (S004)
• Getting married or entering serious relationships
• Launching new business projects or startups (S002, S003)
• Purchasing expensive technology or equipment
• Opening new stock market positions (S002, S003)
• Starting major advertising campaigns

Astrologers claim that during these periods, there is an increased likelihood of misunderstandings, errors in documents, technical failures, and project delays (S013). Some practicing astrologers offer a more nuanced approach, viewing Mercury retrograde not as a catastrophe but as a period for review, reflection, and identifying weak points that normally go unnoticed (S004).

Importantly, even among astrologers there is disagreement. Professional astrologer Elena Chulyukanova emphasizes that this period should not be perceived negatively and carries no disasters (S001). Other astrologers acknowledge that the brain does not actually function differently during this astronomical phenomenon.

The belief is deeply embedded in popular culture, with articles in major publications like The New York Times addressing the phenomenon (S001). The widespread nature of this belief means that even people who don't fully subscribe to astrology may feel anxious about making major decisions during these periods.

What the Evidence Actually Shows

Astronomical Reality: Mercury retrograde is an optical illusion arising from differences in the orbital speeds of Earth and Mercury (S001, S008). The planet does not physically change the direction of its movement around the Sun. This phenomenon occurs 3-4 times per year and lasts approximately three weeks each time (S004). From a physics perspective, Mercury's position relative to Earth cannot exert measurable influence on human behavior, technology, or business decisions.

Financial Market Research: A scientific study published in 2016 specifically examined the effect of Mercury retrograde on capital markets (S002, S003). Researchers tested the hypothesis that Mercury retrograde periods are associated with lower returns and increased volatility in stock markets. The main findings showed no statistically significant negative effect on market returns.

The study noted that "there is a long-held belief that it is better to avoid set plans during Mercury retrograde, signing contracts, starting new ventures or open new stock market positions" (S002). However, the empirical analysis found lower return volatilities during these periods, which actually contradicts the astrological prediction of increased chaos and disruption.

Another academic study titled "Long Live Hermes! Mercury Retrograde and Equity Prices" (S009, S010) tested the null hypothesis that Mercury retrograde does not affect market returns. The study noted that in 1975, 186 leading scientists spoke out against astrological claims. The authors investigated both the investor belief channel (assuming investors believe the astrological theory) and possible direct effects.

Technology Failures: A review of IT incident reports and tech support tickets across various organizations revealed no statistically significant spike in failures during Mercury retrograde periods (S007). Instead, technology issues tend to follow predictable patterns based on software update cycles, hardware aging, user error, and other material factors. This directly contradicts the popular belief that Mercury retrograde causes increased technical problems.

Scientific Community Position: Scientists unanimously state that Mercury's retrograde motion is an optical illusion and superstition (S001). Even some astrologers acknowledge there's nothing to worry too much about (S001). An astrologer interviewed by NBC Chicago noted that while she agrees with caution when signing contracts, the effect will manifest differently in each person's individual chart (S016).

Legal Practice: Legacy Arts Law directly addresses this issue, noting that astrology and law rarely collide except during Mercury retrograde periods when clients express concerns (S012). The firm emphasizes the importance of careful document review regardless of astrological considerations.

Conflicts and Uncertainties

Methodological Problems with Astrological Claims: The fundamental problem with claims about Mercury retrograde's influence is the absence of a causal mechanism. Mercury's gravitational influence on Earth is negligible compared to the Moon, Sun, or even large terrestrial objects. There is no known physical mechanism by which a planet's apparent position could affect human cognition, electronics, or business outcomes.

Confirmation Bias: A Reddit discussion (S014) illustrates how people who believe in Mercury retrograde may seek confirmation of their beliefs. When someone expects communication problems or technical failures, they are more likely to notice and remember instances that match this expectation while ignoring numerous instances when no problems occurred.

Variability Among Astrologers: Even within the astrological community, there is no consensus. Astrologer Shannon Hugman in an article for Medium (S015) debunks some common myths about Mercury retrograde, including the absolute prohibition on signing contracts. Another astrologer interviewed by Yoga Journal explicitly states: "You absolutely do not have to wait to sign contracts until after the Mercury retrograde periods" (S018), though recommending thorough review.

Cultural Specificity: The belief in Mercury retrograde is predominantly found in Western astrological tradition. Other astrological systems (Vedic, Chinese) do not assign the same significance to this phenomenon, which questions the universality of the claim.

Temporal Frames and Predictability: If Mercury retrograde truly caused problems, we would observe predictable spikes in technical failures, contract errors, and business failures during precisely defined periods each year. Large-scale data does not support such a pattern (S007).

The Noetic Institute Perspective: The Institute of Noetic Sciences, which studies consciousness and human potential, notes that "astrological practitioners suggest avoiding making major life decisions during Mercury retrograde" and that "it's best not to sign any contracts" (S004). However, they frame this as a belief system rather than established fact, acknowledging the lack of scientific mechanism.

Interpretation Risks

Self-Fulfilling Prophecy: The most significant risk of believing in Mercury retrograde's negative effects is creating a self-fulfilling prophecy. If people postpone important decisions or approach negotiations with heightened anxiety, they may inadvertently create the problems they fear. The Sea Witch Botanicals article notes that while science-minded people will point to the optical illusion, there's no denying that many people experience real stress during these periods (S008).

Missed Opportunities: Strict adherence to astrological recommendations can lead to missed important business opportunities. Since Mercury retrograde occurs 3-4 times per year for three weeks each time, this means approximately one-quarter of the year is considered "unfavorable" for important decisions. In a fast-moving business environment, such delays can be costly.

False Sense of Security: The flip side of this belief is that people may feel overly confident when signing contracts outside Mercury retrograde periods, neglecting due diligence. As the law firm notes (S012), careful document review is always important, regardless of astrological considerations.

Distraction from Real Risk Factors: Focusing on astrological factors can distract attention from real risk factors in business decisions: quality of legal review, financial stability of counterparties, market conditions, regulatory environment, and the quality of the contract itself. These material factors have demonstrable impact on the success of business agreements.

Psychological Impact: For people who believe in astrology, Mercury retrograde periods can cause real anxiety and stress. The New York Times article (S001) notes that even astrologers say not to worry too much about it. Excessive preoccupation with astrological factors can negatively affect mental health and decision-making processes.

The Practical Middle Ground: Several sources offer a balanced approach. The astrologer interviewed by NBC Chicago suggests that while she recommends caution, the effect is individual (S016). Yoga Journal recommends not avoiding contracts entirely but carefully reviewing everything and verbally confirming understanding of terms (S018). This is sensible advice regardless of astrological beliefs.

Susan Miller's Nuanced View: Celebrity astrologer Susan Miller, quoted in a lifestyle article, acknowledges that "a retrograde period is not a good time to sign any contracts" but also emphasizes that "the environment will be quite fluid" rather than categorically disastrous. This represents a more measured astrological perspective that focuses on increased caution rather than absolute prohibition.

Conclusion

The claim that one should not sign contracts during Mercury retrograde lacks scientific foundation. Mercury's retrograde motion is an optical illusion with no physical mechanism for influencing human affairs. Empirical studies of financial markets, technical systems, and business outcomes have found no statistically significant effects associated with these periods.

While astrological beliefs are part of cultural tradition and may have personal meaning for some individuals, they should not serve as the basis for important business or legal decisions. Careful document review, due diligence, and consultation with qualified professionals are always important — regardless of planetary positions.

For those still concerned about astrological factors, a more productive approach is to use these periods as a reminder for additional attentiveness and thoroughness rather than as an absolute prohibition on important actions. The real factors in the success of business agreements — quality of legal review, clarity of communication, and thorough verification — remain constant regardless of astronomical phenomena.

The scientific consensus is clear: Mercury retrograde is an optical illusion that cannot affect contracts, technology, or human decision-making. The belief persists due to confirmation bias, cultural transmission, and the human tendency to seek patterns and meaning in random events. Making important decisions based on this belief means allowing superstition to override rational analysis and potentially missing valuable opportunities.