Independent voters shifted 19 percentage points toward Democratic candidates in the 2026 midterms, signaling a durable change in political values (Politics). Researchers studying physical resilience found that isometric wall sits reduce systolic blood pressure by 8 points (Health). Meanwhile, NASA selected eight companies to compete for $10 billion in contracts to develop a sustained lunar base (Science).
Gardeners are currently prioritizing soil health and habitat creation to prepare for the coming season. Karin Falcone Krieger suggests that organic matter removed from a property requires replacement to prevent depletion, noting that piles of twigs and leaves offer essential winter shelter for birds. Amy Bauer reports that incorporating shrubs into garden beds reduces maintenance requirements compared to traditional perennials while providing multi-season color. Meanwhile, Nan Wray observes that the…
Concentrating on bottlenecks. Eliyahu Goldratt’s Theory of Constraints dictates that strengthening any link other than the weakest fails to increase the chain’s total output. Anyro illustrates this by tracking 10,000…
An analysis of 270 trials identified isometric exercise as the most effective method for lowering systolic blood pressure, with wall sits reducing pressure by 8 points. Research involving over 25,000…
Digital-first community building. Proponents of digital platforms argue that online groups provide the necessary infrastructure to scale connections quickly. Tony Teegarden reports that after launching a Skool group, he generated $100,000 in…
Some analysts argue the 2026 midterms signify a durable shift in American political values, as independent voters swung 19 percentage points toward Democratic candidates. Proponents of this view suggest that younger voters,…
The case for restriction. Jay Van Bavel argues that individuals should flip the default by removing devices from environments like schools and bedrooms to prevent the status quo bias from delaying necessary…
Patching as the primary defense. Microsoft recently released a single update for Azure Linux containing over 470 CVE fixes, reflecting the industry's struggle to keep pace with an AI-fueled surge in vulnerability discovery. Jeff Morhous argues that engineers must use AI-powered security audit skills to map codebases and hunt for vulnerabilities, as 3% of all critical software bugs in history were discovered in just the last month. This approach treats the rapid identification of flaws as a race that defenders can win through superior tooling and faster remediation cycles.
The geography of global manufacturing is undergoing a rapid reconfiguration driven by the demand for artificial intelligence infrastructure and shifting trade policies. Companies are increasingly moving…
Create before you consume. Ryan Levesque advocates for a morning routine that prioritizes original output over the immediate intake of emails or headlines to ensure a…
The scale-versus-culture divide. Every brand operates in two economies: a scale economy focused on volume, distribution, and margin, and a cultural economy trading in influence, taste,…
Researchers developed a fuel cell interface that increases power density four-fold to 0.75 W cm⁻² at 0.7 V, while retaining 63% of peak power after 30,000…
Retrieve through association. Joe Mills audited his entire work history back to age 11, listing every role from mowing yards to his current writing to trigger…
Ceremonial deer masks. Excavations at Star Carr in Yorkshire have unearthed thirty-three headdresses fashioned from carved deer skulls, preserved in the mud of a vanished glacial…
Centering the individual. Elisabeth Marnik argues that scientific communication succeeds when it connects research to tangible benefits for the public rather than focusing on institutional funding.…
Epictetus taught that impressions arrive in two distinct parts: the raw fact of an event and the value judgment the mind attaches to it. Christine Martin,…
Maintaining systems during transition. Benjamin S. Church repaired a leaking New York City aqueduct in the 1860s by introducing bran into the water flow to seal…
Regulating the nervous system. Courtney McGee suggests that mothers perform physiological sighs to calm the cortisol switch when they feel about to lose their temper, rather…
Kyoto visitors who bypass reservation-only restaurants often find hidden gems like Inui, a restaurant tucked inside a functional bicycle garage that blends Japanese and Moroccan culinary…
Sam Cooper treats celeriac to nine days of low-temperature heating, a process he terms thermal ageing, which triggers the Maillard reaction to produce melanoidins and a…
Engineers now offload bounded judgments to specialized decision models to reduce inference costs and improve reliability, effectively splitting agent workflows into a two-tier architecture. Instead of…
Quantifying national trauma. Peter H. Diamandis ranks the 2025-2026 period as the ninth most volatile era in the last 250 years. This score of 27/40 places…
Yu Feng, chief information officer of Guotai Haitong Securities, mandates a systematic engineering approach to AI governance, arguing that the financial industry cannot wait for a…
Climate Club challenges travelers to replace domestic flights with ground transport throughout November to address aviation as one of the fastest-growing emission sources globally. Participants opting…
Embrace the side quest. Modern life treats every hour as a component of a main quest, from optimizing workouts to monetizing hobbies. Choosing a side quest—a…
Performance auditing. Michael Lombardi argues that head coaches must move beyond obvious game management decisions to audit non-obvious tactical execution after the first quarter. This approach…
Changying (Z) Zheng at Ops Forward describes a shift where software teams move collaboration from Figma comments to Slack to integrate diverse perspectives. The team uses…
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Dynamic guardrails replace the static 4% rule for retirement income
Retirement planning now moves beyond the static 4% rule toward dynamic guardrails, a method that adjusts spending based on actual portfolio performance. Investors set an initial withdrawal rate, such as 5%, and increase it…
Retirement planning now moves beyond the static 4% rule toward dynamic guardrails, a method that adjusts spending based on actual portfolio performance (Tyler Gardner from SocialReCap, Tyler Gardner from SocialReCap). Investors set an initial withdrawal rate, such as 5%, and increase it with inflation, but skip the inflation adjustment during any year the portfolio loses value. If the current withdrawal rate climbs more than 20% above the starting point due to depleted principal, the investor cuts the withdrawal by 10% the following year; conversely, if the rate falls more than 20% below the starting point because of principal growth, the investor takes a 10% raise. This approach prevents the mechanical exhaustion of assets during market downturns by forcing spending discipline when the portfolio underperforms.
An automated system for investing, where contributions occur without manual intervention or emotional input, protects investors from panic selling during market volatility (Ankur Tripathi from Finance School).
The SEC raised the threshold for defining a 'small' investment adviser from $25 million to $1 billion in assets under management to reduce regulatory burdens (Kitces.com).
Advisory firms increasingly outsource specialized services like trust and estate planning to ensemble teams to serve wealthier clients more efficiently (Kitces.com).
Try today · 30 min
Calculate your current withdrawal rate and determine if your portfolio requires a spending adjustment based on the 20% guardrail threshold.
Divide your annual withdrawal amount by your total portfolio value to find your current rate.
You need
Current portfolio balance
Annual withdrawal amount
Initial withdrawal percentage used at start of retirement
Steps
Divide your annual withdrawal by your total portfolio balance to calculate your current withdrawal rate.
Calculate 120% of your initial withdrawal rate to find your upper guardrail.
Calculate 80% of your initial withdrawal rate to find your lower guardrail.
Compare your current withdrawal rate against these two thresholds.
Plan a 10% reduction in spending if your rate exceeds the upper guardrail.
Plan a 10% increase in spending if your rate falls below the lower guardrail.
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Forward the newsletters you already get (a Gmail filter does it) and tell Hebel your goals. Every morning it reads them with 20,000 others and sends one short email, with one small thing to do today. Fewer emails, not more. Free during beta.
Tyler Gardner, SocialReCapon hebel. →✎ Written by a personThis newsletter details the Guyton and Klinger dynamic guardrails, providing the specific percentage thresholds for adjusting retirement withdrawals based on portfolio performance.
Ankur Tripathi, Finance Schoolon hebel. →✎ Written by a personThis piece outlines the psychological benefits of automated, boring investment systems that remove human emotion from financial decision-making.
Robert Marstrand, OfWealth by Rob Marstrandon hebel. →✎ Written by a personThis analysis of six decades of US stock returns provides historical context on real returns and inflation to inform long-term retirement expectations.
Kitces.comon hebel. →This update covers recent SEC regulatory changes that redefine small investment firms and affect how advisors manage compliance and client costs.