On investment risk

This is something that I have been trying to wrap my head around for a while: people say that the global stock market returns around 5% yearly (on top of inflation, based on the last 100 year), but it’s still risky and the risk is the volatility: the stock returns change a lot year over year, but on the long run they average out. But if the returns average out, then as long as I don’t check my portfolio daily and make bad decisions on short-term swings, I should be fine, right? If yes, then where is the risk? And in general how is volatility the same as risk?

Read more

Testing the Panasonic Advance Series Link Plus smart light switches

We are building a house, and I recently looked into smart lighting and light switches concluding that the best option for us is likely Panasonic’s Advance Series Link Plus switches (アドバンスシリーズ リンクプラス). I got my hands on two of the switches and in this post I’ll share what I learned from testing them out.

Read more

Fuzzing with Bazel: cc_fuzz_test

Recently I have been fuzzing C/C++ projects built with Bazel using libfuzzer, so I thought to share my learnings on some of the details on how to do this.

Read more

Long flight with a 6 months old baby

We just took a 14.5 hours flight with our 6 months old baby from Japan to Europe and in this post I’ll share how we manged to make it a pleasant experience for everyone involved.

Read more

How to use the corporate babysitter vouchers (ベビーシッター派遣事業割引券)?

All levels of the Japanese government have various programs to support people with kids. One of this, ベビーシッター派遣事業割引券, is a national program subsidizing baby sitters for working parents: companies can purchase baby sitter tickets and give it to their employees. My company is participating in this, and since it is a bit complicated to use, I’ll describe how to use it in this post.

Read more