Rappelling accidents kill a larger share of the people involved than climbing accidents overall. The usual causes are rappelling off the rope ends, anchor failure and no backup, and recent AAC fatality reports add devices on only one strand or on the wrong strand. The fix is to run the same sequence every time: clip in first, knot the ends, put the friction hitch on before extending the device, and load-test and get a partner check before unclipping. Single-strand rappels (GRIGRI, pull cord, fixed line) are most dangerous when the device goes on the wrong strand, and simul-rappels and tandem rappels are rescue techniques not to improvise.
Hauling means the leader trails a 6–8 mm static line and pulls the pack up at the anchor through a progress-capture pulley like a Micro Traxion, so the second climbs without it; haul only on steep, hard pitches without loose rock, keep the line tight and never yank a stuck bag. On big walls, haul 30–40 kg bags with a Pro Traxion and body weight, and dock the bag before unloading the pulley.
The simplest first prusik is 1.5 m of 6 mm nylon accessory cord tied into a loop with a double fisherman's, used on a 9.5–10 mm rope (Petzl's method). If your rope is down at 8.5–9 mm, or you climb a lot of multi-pitch, buy a sewn loop whose maker states it works on thin ropes: Beal Jammy comes with a length-and-wraps table for 7.3–10 mm, Sterling HollowBlock2 says ropes of 7 mm and up, and BlueWater VT 7 mm covers 8–9.5 mm. We couldn't find a manufacturer source for "2–3 mm thinner than the rope", so treat it only as a starting point. Beal explicitly forbids friction hitches on bare Dyneema cord. Aramid resists heat but is stiff, and DAV's 2020 tests found stiff aramid-core cords reacted worse; if you buy one, test on the ground that it grips.
Rope soloing comes in three tiers, from simplest to hardest: top-rope soloing (the rope is fixed above you and two devices ride up with you), single-pitch lead rope soloing (the tail is anchored at the base and you feed your own rope and catch your own falls), and multipitch rope soloing (every pitch is climbed once, rappelled once and climbed again). Most devices' makers do not support self-belay: Petzl says the GriGri is not a self-belay device and forbids modifying it, and only a handful of devices are labelled for solo use. The baseline across all three tiers: two systems, backup knots, a test on the ground, and never changing your usual routine because you are in a hurry.
The Gemini API CLI (gemini-api) is an experimental preview (v0.4.x) Google released on 2026-10-19: a single Go binary that turns Gemini models, media generation, and managed agents into stateless shell commands. It is not a coding agent. Use it when your own code decides the next step, Antigravity CLI when you want an agent to plan, and the Gen AI SDK for application backends.
In 2025 evaluations, AI models such as AIFS had smaller typhoon track errors than traditional models such as ECMWF's IFS, while intensity and wind-and-rain forecasts remain weak. When reading a forecast map, first separate a single track from an ensemble proportion, and track from intensity. Treat disagreement more than three days out as undecided.
On October 20, Perplexity Computer gained a fully local mode: the model and the agent both run on an Apple silicon Mac, for Pro, Max and Enterprise subscribers, with 36GB or more memory recommended. Files and reasoning stay on the Mac, but live information, the browser and sending mail still go online.
Start with weight per meter. At 80 m the ropes here run from 3.84 kg (Beal Opera) to 5.15 kg (BlueWater Lightning Pro), a gap of about 1.3 kg. With a 23 kg checked allowance that gap barely matters, and two weeks of daily lowering on limestone call for a 9.5–9.8 mm rope with a sheath proportion near 40%. A thin 8.9–9.2 mm triple-rated rope is worth it only if you fly cabin-only or will pair it with a half rope on multi-pitch. Before choosing, confirm the model comes in 80 m (the Petzl MAMBO and Sterling VR9 do not), and check your own and your partner's belay device manuals: the GRIGRI works best on 8.9–10.5 mm.
Define what the alert detects before separating benign triggers, blocked attacks, and insufficient evidence. An assistant can propose evidence-linked triage; closure requires predefined criteria.
Replay a ticket attack chain and analyze Anthropic’s public incident report, separating evidence, human decisions, evaluation shortcuts, and visibility limits.
Trace identity, object selection, and the return path before testing allowed and forbidden pairs. Review comments propose hypotheses; an independent policy and observed output establish the finding.
Use a resettable copy to examine application logic, preserve cloud conditions to examine deployment boundaries, and follow the agreed scope for real systems. Keep the question and outcome criteria when changing environments, and record what changed.
The backend derives the acting identity from trusted authentication, then checks the requested action against the resource. Test an explicit same-tenant, owner-only policy with allowed and denied reads.
Normalize time without discarding provenance. One ticket read establishes that read; an assistant claim, missing logs, and a later denial cannot substitute for the underlying evidence.
Replay one malicious tool proposal through different execution paths and distinguish model manipulation from unauthorized effects. Labels, data permissions, and action approvals serve different purposes.
Compare vulnerable and fixed builds with the same HTTP requests, retaining ticket responses, audit events, and a timeline. Block unauthorized reads while preserving legitimate access.