Y-BOW · ENGLISH EDITION
Evidence, ideas and clear explanations. Explore investing and science through primary sources, original diagrams and transparent calculations. Written by a medical-science PhD with 17 years of investing experience.
Investing · Science · About Y-bow · 日本語
Investing
INVESTING
Examine AI demand, memory pricing and semiconductor valuation risk using primary sources and transparent revenue calculations.
INVESTING
Understand TQQQ’s daily 3× objective, compounding, costs and drawdowns with transparent examples and links to primary sources.
INVESTING
Compare VT, VTI and VOO through portfolio overlap, geographical weights and transparent allocation calculations.
INVESTING
See why dollar-cost averaging can lower your purchase cost without guaranteeing a profit, with simple numerical examples.
INVESTING
Understand CAGR, arithmetic average returns and the effects of gains, losses and withdrawals on your investment results.
INVESTING
Explore the Buffett Indicator’s stock-to-flow comparison and why market capitalization divided by GDP cannot time a crash.
INVESTING
Understand why your household inflation can differ from CPI, and calculate the effect of rising prices on real income.
INVESTING
Learn how asset classes, sectors, overlap and correlation shape diversification, with a simple portfolio-volatility calculation.
INVESTING
Understand QYLD and XYLD, capped upside, distributions and total return without mistaking a high payout rate for guaranteed profit.
INVESTING
Build a more useful portfolio backtest by checking dates, cash flows, fees, benchmarks and hindsight before interpreting the result.
INVESTING
Recognize survivorship and selection bias in fund rankings, investor stories and backtests using a transparent example.
INVESTING
Compare growth and value investing through earnings, valuation multiples and transparent examples instead of a permanent winner claim.
Science
SCIENCE
Learn what a habitable zone means, how stellar energy changes with distance and why a promising orbit is not proof of habitability.
SCIENCE
Understand why the Moon’s far side receives sunlight and how synchronous rotation keeps the same face toward Earth.
SCIENCE
Discover why astronauts float in orbit even though gravity at ISS altitude remains strong, with an original calculation.
SCIENCE
Separate dark matter from dark energy, read the approximate cosmic budget and understand what current evidence can and cannot show.
SCIENCE
Explore the Sun’s future, Earth’s physical survival and habitability, while separating astronomical estimates from precise countdown claims.
SCIENCE
Understand the Solar System’s orbit around the Milky Way and why reference frames matter when interpreting dramatic helical animations.
SCIENCE
Learn how galaxy rotation curves constrain mass distributions, why flat curves matter and why the evidence needs careful modelling.
SCIENCE
Explore planetary, stellar and galactic energy scales, technosignatures and the limits of ranking civilizations by power use.
How to read this magazine Investment articles explain mechanisms and risks; they do not provide personalized advice or guaranteed returns. Science articles distinguish observations, simplified models and open questions. Each article links to its Japanese counterpart and identifies sources and assumptions.
About the author and our approach · Privacy & advertising
